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Immersed in the warm light of the afternoon sun, Vincent was napping on the vast, padded lounger in the examination room, his eyes closed and his head resting on his coiled-up body. His appointment had been due ten minutes ago, but the serperior was too sleepy and comfortable to mind the delay. Whoever had been assigned to him would come eventually, he figured, and if not, he'd simply leave once he had rested up, be it later this afternoon or tomorrow.

The giant snake was just about to drift off when the sound of hasty footsteps emerged from the corridor outside, and while he opened his eyes a crack, the door of the examination room swung open and a woman in a lab coat rushed in. With a pair of red glasses on her petite nose and a billowing flood of dark, curly hair flowing down her neck, he immediately identified her as Lydia, one of the assistant researchers of the maternity research section, and he raised his head a little, tilting it at her with a befuddled blink.

The researcher shut the door with one foot, then she hurried to the desk next to Vincent and put down a notepad and a tray of various tinted flasks and pill bottles. Finally turning toward him, caught her breath with a few deep gasps, and smiled, "Hi, Vincent. I assume you expected someone else for your afternoon appointment, but there was a glitch in the calendar and I had to fill in for Greg." She reached for one of the pill bottles, giving it a good shake before she twisted it open and poured a couple of round lilac pills onto her hand. "So sorry that I'm late. I just had to rush halfway across the building and back to find these things."

Vincent's slitted red eyes darted to Lydia's hand, then back to her face again, blinking in confusion throughout as he hadn't expected a female researcher to replace his appointed examiner. He rarely ever came this close to a human woman, as they were usually kept separate from the male breeder pokemon, so he couldn't help but delight in her appearance, his muzzle slightly ajar as he inspected her from head to foot. So familiar, yet so excitingly different from her male colleagues, her hazel skin looked so much smoother and softer than that of any of her male colleagues, and she smelled like a whole bouquet of sweet roses.

"Are you so surprised, or just so excited to see me?" Lydia interrupted Vincent's dopey stare with a giggle, and he hastily shut his jaw, licking the drool off his scaled muzzle. "Anyway, as far as I've been informed, these pills are a much more potent formulation of the ones you tried previously and should be able to induce a true double-erection. However, we'll only know if you give them a try, so here."

Normally, standard protocol required the emerald serpent to take his pills in a glass of water, but the researcher didn't bother when she offered them to him with her outstretched hand. Luckily, he didn't actually need water to swallow them, since his anatomy was designed to swallow objects much larger than these minuscule pips, and he gingerly bent his snout over her palm, still eyeing her with confused curiosity while he carefully darted out his forked tongue and flicked the purple tablets into his maw one by one, sampling more of her sweet, perfumed scent in the process.

When Vincent finally gulped everything down, Lydia nodded with a pleased smile and reached for her notepad, noting the current time. "Alright, let's see how long it takes for them to take effect. Last time it took ten minutes before you noticed any changes, right?"

The serperior nodded slowly as the tiny tablets made their way down his long, scaled neck, his heart thumping hard in anticipation even though he knew that nothing would happen for another few minutes.

While Vincent stared breathlessly at his coiled body, waiting for some sort of change to manifest, the researcher dropped onto a chair beside the desk, crossed her legs, and joined his wait, biting her lip and spinning a pencil between her fingers as she watched him.

Neither of them had to wait long, though, because the moment Lydia planted her butt in the seat, an intense heat washed through Vincent's body. She obviously couldn't sense the warmth accumulating beneath his scales, but she immediately perked one eyebrow up when he let out a shaky groan.

"Wait, what's that? Is it taking effect already?" she asked, her voice quivering with excitement while she quickly looked him up and down. "That was fast."

Vincent nodded again, unleashing a heavy hiss when the heat was followed up by a titillating rush of tingles.

"I can't see anything different yet. How are you feeling?" Lydia followed up and leaned to the desk, rummaging through a few drawers until she found a tinplate board with a table of embossed words and pictographs representing different sensations.

Eyes half-lidded, the serperior tilted his head at the board in her hands, staring at it for a hazy moment before he slipped out one of his vines and sluggishly tapped the symbols for heat and tingle.

"Okay, that checks out. Let me just… quickly… write this down," Lydia said, scribbling a few notes onto her notepad. However, she froze when a wet squelch echoed through the examination room, and when she looked up a moment later, her eyes widened in astonishment.

Following her gaze, Vincent discovered what he had already anticipated: the thick, pearly folds of his vent had parted, revealing his two tapered, nubby crimson hemipenes, his abdominal scales bulging from the sheer amount of cock flesh eager to push its way outside.

"Th-there we go, the erections are establishing itself. Let's see how much bigger they get."

It wasn't just the serperior's cocks that were growing, though, but his arousal as well. The sweltering lust was starting to fog his mind and twist his thoughts while his senses became increasingly sensitive to his surroundings, but most especially to the woman right next to him. Flicking out his forked tongue, he sampled her scent again, and he not only picked up on her perfume, but also the much more natural smells underneath, a twang of sweat, a mild musk, and the very distinct sweetness of femininity that only riled him up further.

Letting out another heavy, horny groan, Vincent tracked the researcher as she put down her notepad and moved toward his lower body, pulling out a measuring tape. "Hold still for a moment, please," she instructed him as she took some quick measurements of his swelling rods, and although she didn't touch them, the attention got him flexing and oozing strands of sticky, glistening pre. All the while, he couldn't help but wonder if her tan skin was actually as warm and soft as it looked, and he felt the growing urge to thrust his cocks against her reddened cheeks and feel their supple heat against them.

Before the serpent's temptation could turn into anything more, however, Lydia pulled away and chewed her lip with a frown. "Twelve inches each, one member stiff and still growing, the other one slack and no longer growing. Looks like the pills got you aroused but didn't actually manage to get both of your hemipenes hard. What a shame. Not even the more potent formulation is working," she sighed, returning to the desk to take more notes. "But perhaps we just have to wait a little longer?"

The serperior returned her comment with a sheepish look, almost as if he wanted to apologize for failing to overcome his natural limits, because although he was blessed with two dicks, only one of them ever became truly hard and stiff. The other, in his case the left one, remained small and floppy, swinging and flailing around uselessly while he bred his mates with the thicker, bigger cock.

Vincent got distracted from his unsurprising failure, however, when the researcher dropped on all fours in front of him to retrieve something from the lower drawers of the desk, pushing out her butt in the process. She did wear a pair of sturdy black jeans, but that didn't stop a flood of raunchy thoughts from entering the male's increasingly lust-addled mind, and he licked his lips as he wondered what she would feel like wrapped around his dominant dick, screaming in bliss while he stuffed her with a womb full of eggs.

When Lydia got back up with a longer measuring tape in her hand, it was time for another surprise. "What the— how the— you weren't this big before, right?"

Tearing his eyes away from the woman, the serperior mirrored her astonished gasp when he realized that his cock had grown so much that it almost poked him in the eye. Thicker than ever, longer than ever, hard as diamonds, and studded with fat nubs, his now gargantuan erection made the other, flaccid taper next to it look even more pathetic in comparison, an utterly useless appendage even if it was still more than twice as big than most human dicks.

"Arceus, I didn't expect this. You've grown bigger than a wailord," the researcher exclaimed, rushing back to Vincent's cocks to take new measurements. Too stunned by the outcome, she didn't even bother to keep her distance, shakily pressing her fingers and the tape against the swollen schlong. "W-wow, it's th-three feet long."

Whether it was Lydia's fleeting touch or the pills finally doing what they were supposed to do, the grass serpent's twin breeding meats suddenly flexed vigorously, and while she was busy measuring his bigger rod, the other one began to grow larger and harder. Throbbing to the excited thumping of his heart, it swelled inch by inch, fattening and stiffening to catch up with the other rod in both size and girth.

"H-hold on, what's that? Your other dick is getting bigger?! It's working!" the researcher squealed as she stared at Vincent's second cock, hurriedly measuring it from tip to base as well.

The serperior groaned when Lydia got hands-on with his second penis, an electrifying surge of stimulation flashing through his brain like lightning, and while it was exciting to have the first actual double erection of his life, it was almost too much for him to handle. At least when it was a cute girl who touched him, making him acutely aware of just how sensitive his cocks had become. He could feel everything, from the tender warmth of her fingers to the cold metal of the tape and even her hot, wet breath washing over his nubby pricks, and he found it harder and harder to contain his growing urges, the breeder in him pushing him to turn his horny fantasies about the researcher into reality.

Struggling to restrain himself, Vincent finally tilted back his head and stared at the ceiling in an attempt to distract himself from his lewd thoughts. It helped that Lydia finally pulled away from his cocks, giving him some space to calm down and collect himself while she returned to her notepad.

"Well, looks like the experiment was a success after all. Congratulations, Vincent, you're probably the first serperior in the world with a proper twin erection," she chuckled, writing down a few more notes. "But we definitely need to adjust the formulation in the future, though, because that stuff just tripled the size of your hemipenes."

Still staring at the ceiling, Vincent nodded tensely, and he didn't dare look at Lydia when she rustled about with something, figuring that she was just putting away her notepad. However, there was little he could do when she asked, "Also, would you be so kind as to show me what you feel like right now?"

The serperior turned his head just enough that he could see the board in her hands, hesitantly tapping aroused and then the 10 on the scale next to it.

"A ten? Really?" Lydia cooed. "That's a lot. I'm sorry that the pills left you so hot and pent-up. Although, I can help you with that if you want."

A powerful shiver raced through Vincent and he tilted his head a little further toward the researcher. His heart skipped a beat when he realized that she had just removed her glasses and was just about to unbutton her lab coat. Breathlessly, he watched her split the white fabric to reveal a complete lack of clothing underneath. She wasn't wearing a shirt, nor a blouse, not even a bra, and instead exposed more and more of her dark, alluring skin.

"So what do you say, stud? It's business before pleasure, but we're done with business, so how about I give you some relief?"

This was the exact reason why male breeders and female researchers were kept in different sections of the research building, and Vincent wondered what Lydia had done to trick the system into getting this appointment with him. Then she pulled her lab coat open and bared her chest, dispersing his budding reservations with a perfect view of her voluptuous curves, her tantalizingly smooth skin, and her big, luscious breasts.

The serperior ogled Lydia's naked chest for another dazed second, then he snapped out of his stupor and whipped out his vine, rapidly tapping yes on her board.

"Wonderful. Let me take good care of you then, handsome, because you've truly earned it," the researcher giggled and dropped her lab coat to the ground. She wouldn't stop at that, of course, her plump tits jiggling as she bent forward to remove her shoes one by one, then her socks, and finally her pants, slowly pulling them down to her ankles to reveal her enchantingly thick thighs.

When Lydia straightened up again, she had stripped everything but her pair of frilly white panties, and although they veiled the most intimate part of her, the prominent, slightly soaked camel toe on her underwear still got Vincent's heart pounding. She looked almost as aroused as he was, biting her lip with a lusty sparkle in her eyes as she sauntered toward him, and he instinctively held his breath when she approached his gargantuan rods, getting so thrillingly close that he could feel her hot breath on his tips again.

"Fuck, you're huge," the woman giggled, licking her lips as she examined the serperior's gargantuan twin erections from up close. She wasn't exaggerating. So far, Vincent had been too busy suppressing his horny fantasies to pay much attention to his enlarged shafts, but now that she had allowed him to indulge his lust, he realized that each of his swollen, throbbing fuck rods was the size of her entire torso, easily reaching from her navel to the tip of her head, and the nubs lining every inch of his breeding meats had stiffened almost to the size of her fist each. Yet, his overwhelming girth didn't appear to concern her in the slightest, as she moved closer still and wrapped her arms around both of his shafts, hugging them against her chest like a lover would. "So hard and hot, and leaking so much already?"

Not to mention their amplified sensitivity because the moment she embraced his cocks, he unleashed a deep, guttural moan of joy when he finally got to experience the wonderful warmth and heavenly softness of her dark, silky skin, from her surprisingly firm midriff to her ample breasts and deep cleavage. Trembling from his head to the tip of his tail, the serperior rewarded her with two big squirts of pre from his massive endowments, pulsing and throbbing even harder against her body, but he didn't make another move yet. Instead, he watched with half-lidded eyes as she wrapped her hands around his tips, squeezing and stroking them while guiding one of them to her face.

Vincent bated his breath in anticipation when Lydia pursed her soft lips, hovering them just above his leaking, twitching cum slit for a teasing second before she planted them right on top, giving his tip an unexpectedly deep kiss. Bracing for a fleeting smooch, he instead felt her tongue squirm and glide into his urethra, stretching the sensitive channel and slurping up his sticky, salty nectar from the tap with a wet moan. "Ah, you're delicious, stud~"

Never before had anyone played with the serperior like that, as his fun with the female breeders always boiled down to senseless, mindless breeding and rutting, and while his partner wasn't doing much more than hugging and licking his cocks right now, the fact that she was lavishing both of his fully-engorged rods at once already made it as intense than the hardest fuck he had ever had. He writhed and moaned, his mind blanking with joy as he melted into the researcher's tight hug with his muzzle wide open and his forked tongue lolling out of his maw.

It wasn't long before Lydia's greedy slurps and huffs got the giant snake hungry for more. While her ministrations fueled his arousal like the purest, most potent aphrodisiac, he suddenly thrust his sensitive, nubby rods against her with a deep, crude growl of primitive desire, almost knocking her off her knees in the process.

The researcher squealed in surprise as Vincent shoved his fuck meats against her, but refused to let go, clutching them even harder against her plush bosom. "Oh my, it looks like someone's eager for more~ You wanna fuck my girls, don't you, handsome?" she purred, plastering each of his tips with sweet kisses. Then she let go of his twin dicks, but only to climb next onto the couch next to him, lolling herself on her back and pushing out her chest with a pert grin. "Well, they're all yours, so come and help yourself, big boy~"

Lazy and perfectly comfy in his spot on the couch, the serperior hadn't moved an inch ever since he had entered the examination room, but the moment Lydia presented him with her tempting offer, he got up and slithered his coils around her, propping her up on his upper half like a warm, scaly bathtub before he moved his lower half and his twin breeders into position. Fat drops of pre splashed onto her chest as he dangled his three-foot monstrosities over her like carrots on a stick, teasing her with their swollen, turgid size for just a moment before he slapped them down onto her body, sandwiching her between the heavy, sweaty cock meat and his musclebound body.

The scientist embraced her entrapment without a second thought, letting out a shaky moan as she wrapped her arms around Vincent's rods. "Ah, so rank, so ripe, so heavy, I love it! Now come on and fuck me already!"

Lydia's words were the serperior's command, and he thrust his shafts against her once more, but this time he wouldn't stop. Instead, he yanked them back the instant his vent pressed against her chin, dragging them all across her tits and belly until only just his tips still rested on her abdomen, so dangerously close to her soaked panties. Then he thrust them forward again, shoving them against her belly and her breasts, again and again, slotting one member between her large tits on one stroke, and shoving the other across her cleavage on the next.

Slowly at first, but soon ever faster and harder, the emerald serpent worked his tapers against his partner, slathering every inch of her warm, dark skin with his pre and sweat, soaking her with his scent, and enjoying the feeling of her soft, curvy body against his barbed rods with breathy grunts and hisses, all while she unleashed effusive cries of joy, fanning his arousal further while he marinated her in his hot juices.

Enveloped by an unparalleled rush of stimulation, it didn't take long for Vincent to lose himself completely in the slurping, squelching rhythm of his thrusts, and although he technically humped the researcher the same way a pent-up growlithe humped his master's pillow, it was much more intense than it had any right to be. Only the underside of his rods rubbed against Lydia, and they kept awkwardly slipping and sliding around as he thrust against her, but experiencing her like this with twice the meat, twice the sensitive surface, made more than up for it. For the moment, it was even enough to satisfy his blazing lust, as he was well on his way to his first orgasm, focusing on going faster rather than anything else.

Thanks to his supercharged sensitivity and increasingly frenzied pace, the serperior reached the edge of ultimate bliss faster than ever, the pills condensing what usually took fifteen minutes to just about two. He wouldn't have to be embarrassed about his premature ejaculation, though, as it would also become the biggest, most intense flood of his life. Pressing his lips together, he still tried his best to delay his climax, but his internal cum tanks were so packed with cum and desperate for relief that he failed to stave off the inevitable for long, and when the dam finally broke, it burst with a resounding bang.

Tossing back his head, Vincent unleashed a thundering howl as his twin cocks started flexing and flailing violently, flaring and fattening while two visible bulges raced up from his vent to his tips. Not a second later, the first spurts of cum blasted out of both like wine from a violently shaken bottle of champagne. Bubbling and foaming, the thick, white liquid shot straight across the examination room and hit the back wall with a resounding thud, leaving two dents on the surface.

The damage to the wall was hardly visible, though, hidden by a thick layer of dripping seed, and the serperior had only just gotten started. Throbbing, pulsing, flexing relentlessly, his cocks continued to gush and spurt like geysers, leaving so little time between squirts that his output merged into a pair of constant streams, hosing down the wall, the ceiling, the couch, and the rest of the examination room's interior as if he was trying to put out a fire. Not that the male noticed much of his orgasm's indiscriminate, excessive messiness, as he was too busy succumbing to overwhelming bliss to think about anything else, howling and hissing, squirming and writhing in pure joy.

Lydia, meanwhile, was trapped in the eye of the storm, watching the eruption in wide-eyed awe without receiving more than a little back spray, as the serpent's rods shot his main load right over her head. Thanks to the male's mindless shifting and squirming, however, it was only a matter of time until he dragged his flexing, spurting fuck rods back down to her belly and covered her face and chest with his hot, sticky cum in mere seconds. It also made for the perfect lubrication when he inevitably recovered from the initial brunt of his climax and realized that he still craved more. Without wasting another thought, he began thrusting again, rubbing and grinding his messy cum cannons against whatever part of the woman's body was next to them — be it her arms, tits, thighs, or face, it didn't matter — and he soaked the rest of her in no time, somehow even getting it all over her back.

Vincent wasn't satisfied with a lazy humping, though, as the renewed rush of stimulation whipped him up into a fresh frenzy. Although his orgasm was winding down, he defied his ordinary post-nut laziness and began to thrust faster and faster. Wilder and more frantically, too, so it didn't take long until one of his fat, spiny fuck rods slipped between Lydia's thighs, pushing up against her panties and into the soaked hole underneath. The serperior only managed to slip in the first inch of his tip, but the hot, wet tightness elicited a stunned squeal from them both, and his eyes widened as he got a taste of something that immediately turned into a ravenous hunger for more.

"A-ah, Vincent!"

The emerald serpent heard the researcher's moan, but before she could say anything else, he shoved his cock deeper into her cunt, spreading her snug channel and stretching the fabric of her panties until they ripped in two. With that flimsy piece of fabric out of the way, nothing stopped him from going even deeper, and although the woman was extraordinarily tight, she was sopping wet and stretchy enough to envelop the first foot of his fat breeding rod like the most luxurious hug in the world. He had had dozens of mates before her, but the sensation of her pussy outclassed everything he had ever experienced. Merging with his enhanced size and sensitivity, it almost made him cum on the spot, not even a minute after his previous orgasm had ended.

Lydia had taken the first foot of Vincent's schlong surprisingly well, accompanying his plunge with a cry of overwhelmed bliss, but shoving his meat even deeper into her cunt proved almost impossible without additional assistance. Thus, the serperior instinctively wrapped himself around his partner's busty, cum-soaked shape once, twice, and finally, a third time to constrict her with his thick, scaly coils like a burrito. That way, she couldn't move an inch when he finally thrust forward again, driving his rod inside her with the full force of his musclebound body, and once he successfully forced himself through her cervix, her womb couldn't do anything but surrender to its fate. Inch by inch, bit by bit, he stuffed more of his gargantuan cock into her uterus, stretching it out and distending her belly with his monstrous girth, groaning and drooling in primal, senseless pleasure.

Impaled on two feet of serperior breeding meat, Lydia erupted into a violent orgasm and joined Vincent's song of delight with a serenade of guttural screams and cries. Her cunt desperately clenched and tightened up around his schlong, milking him with crushing might, which riled him up so much that he forced the last foot of cock meat into her womb, stretching her belly out like a cheap rubber condom.

Once Vincent bottomed out, his other rod smacked against his partner's plump rump, and the touch planted an even more ridiculous idea into his lust-addled mind. He had two fully erect cocks now, she had two holes down there, and if her pussy had managed to take his entire length, her ass would be able to take the other just fine, right? The notion was so tempting that he immediately pulled his rod back out of the cumming woman. Leaving just the tip stuck inside her, he wrapped his vines around his other taper to align it with her asshole, never once stopping to reflect on the fact that he was about to stuff both of his gargantuan breeders inside her at once.

No, the serperior was so desperate to experience the true potential of his enlarged, enraged double dicks that he thrust forward without a second thought and rammed them into Lydia's clenching holes, forcing them in all the way to the hilt with a guttural roar. Her response was immediate. Her entire body shook as she let loose a deafening howl and squirted her juices onto his scales, cumming even harder from being stuffed by the male's two three-foot fuck meats like one of the lab's breeding racks, bulged and stretched to her limits.

Vincent had successfully snapped his partner's brain in half when he first impaled her pussy with his cock, and now that he had shoved both his schlongs in her hot, clenching holes, his own mind broke in two from the unparalleled surge of stimulation. Humping her plump tits had been great, stuffing her cunt had been heavenly, but this… words failed to describe the pure bliss he experienced at that exact moment, as the delight washed his thoughts away in a sky-high tsunami of delight, and he wasn't even cumming yet.

Suddenly, Lydia disrupted the serperior's stupor with a desperate cry, "Yes! More!" Was she really asking for more? "Ah, give me more!" He peered at the woman in his coil for a surprised second before her needy cry flipped a switch inside him, activating his breeding mode. As if possessed by a mind of its own, his lower body began to move, his muscles tensing and relaxing in a powerful rhythm to force his twin meat spires in and out of the researcher's holes, stretching and loosening her with the same care and consideration as the breeding racks that stood in the milking room just a few steps down the hallway.

Vincent's current cock sleeve was much noisier and hotter than any of those steel-and-wood contraptions, though, as she took him with vibrating squeals and high-pitched cries of ecstasy, spit and tears streaming down her cheeks and open mouth as he fucked her silly and beyond. Was her experience so much more intense than his own? He couldn't tell, but it hardly mattered as he quickly lost himself in the rush of breeding her, too busy accompanying her song of rapture with his own grunts and groans of joy to think about anything else.

Battering his cocks faster and ever faster into his squealing partner, the serperior soon hammered her hard enough that the obscene slurping and meaty thuds of his scaled abdomen slamming into her backside was almost as loud as their combined howls, the heavy impacts flushing her dark buttocks in a deep, rich red. Amidst that onslaught of stimulation and brutal thrusts, the male breeder's concept of time unraveled almost completely, as it could've taken a minute or an hour until another orgasm started building in his loins.

But when Vincent finally noticed the budding tension of his onrushing eruption, it already hit him as hard and abruptly as a speeding truck. Blindsided by his orgasm, he burst into a dazed, thundering cry as his brain melted down into a puddle of pure ecstasy and his vision blurred into a firework of sparkles. Flexing and pulsing violently, his twin rods succumbed to the climax just as quickly, his internal nuts churning up another huge, gurgling load for the woman stuck within his coils, but although he was cumming the hardest he had ever come, he didn't stop thrusting. He couldn't stop thrusting as his orgasmic pleasure fed into a self-perpetuating feedback loop that kept his muscles moving on a quest for more and ever more of his partner's sweet, heavenly tightness.

A tightness that became a lot wetter as the serperior blasted the first ropes of seed into Lydia, spurting his thick, virile load right into her guts and womb before he yanked his nubby double dicks backward, lining every inch of her pussy and her ass with another squirt his gooey love. On the next thrust, he then forced half of his cum deeper and made the other half spurt from her stretched holes, gushing and splattering all over her butt and his pearly underside. Things only became messier and noisier from there, as he plunged, pumped, and stuffed her mercilessly with his seed and twin cocks, too busy howling out in bliss and basking in her cries of joy to care where his load ended up.

Spraying and splattering absolutely everywhere, Vincent's cum made for the ideal lubrication to keep pounding his partner with undiminished speed, even while his orgasm fattened and inflated his rods with cum and more blood. Ramming and ruining both her holes with equal might, it took just a few seconds for him to dump the first gallon of cum inside her, and his output was still growing stronger, the next few gallons pouring from his tips in a raging, continuous torrent.

As the serperior kept dumping his cum into Lydia's guts and womb, her bloating belly soon began to push back against his tight coil. He refused to loosen his embrace around her, though, forcing her midriff to yield to his embrace. Rapidly expanding, it soon filled out every nook and cranny until every inch of her stretched skin pressed firmly against his own scales, but he still wasn't done nutting, he still kept plunging his fat breeding meats into her depths, he still pumped ounce after ounce inside her regardless of how much she could take. The consequences of the male's inconsiderate stuffing weren't much longer in coming, as the researcher's cry suddenly deteriorated into a wet gargle, and when he looked down, he found her with her eyes as wide as her mouth while a raging flood of cum gushed from her throat like from an open spillway.

He was cumming through her! The realization hit Vincent like a slap to the face, and as hot as it was to stuff the petite woman with so much of his seed that it came out the other end, he reflexively yanked his giant schlongs out of her with two sloppy, wet pops to keep her from choking on his cum. Luckily, it took just seconds for the raging rush from her mouth to ebb into a much more manageable dribble.

Unfortunately, while Lydia replenished her breath with desperate gasps, the serperior was now spurting over her ass instead of inside her. All that hot, clenching tightness was gone, all that otherworldly stimulation was gone, but his lust was as intense as ever, and his frustration about the abrupt denial swiftly mounted. He still needed to bury his cocks somewhere, and he needed to do it now, but how? After nutting all the way through Lydia, her ass seemed like a bad choice, and it was getting increasingly uncomfortable to keep her wrapped up with his body, so he unceremoniously wrapped one vine around her arms and pulled her out of his embrace.

Hoisting the stuffed, reeling researcher into the air, the serperior rolled over onto his back and went for the only alternative he could think of right now. Curling his second vine around his spurting fuck rods, he unceremoniously aligned his tips with her crotch again, but this time he didn't aim for both of her holes, but just for her gaping, gushing cunt. Would she be able to take two giant cocks? The question only peripherally bothered the male when he coiled his vines all around her swollen body and unceremoniously slammed her down onto his tips.

The first foot of Vincent's twin cock meats entered without much of a hitch, his tapered schlongs naturally stretching Lydia's channel out to twice its previous width until the bulge on her abdomen was thicker than her waist. The second foot took considerably more effort, a heavy grunt escaping his muzzle and his vines flexing while he wrested her cervix wide open, invading her cum-ballooned womb with his tips, and then the rest of his turgid fuck rods, but he wouldn't let up, and it wasn't long before he forced the last and third foot of his huge, spiny breeders inside her as well, bottoming out with a wet, meaty thud as her plump vulva met his slit in a sloppy kiss.

And what was the researcher's reaction to the male's ruthless insertion? Looking at him with half-lidded, hazy eyes, she screamed and howled harder with every inch he added, and once he was halfway inside her, a series of familiar contractions rushed through her abdomen as she erupted into yet another orgasm, cumming violently while he invaded her fertile depths with both his massive breeding rods at once.

As before, Lydia's orgasm fired Vincent up more, and with a bestial growl, he tightened his vines around her body and started to plunge his cocks in and out of her in a rekindled rutting rage. This time, he wasn't just breeding her like any of his previous mates, though, but literally using her like a cheap pocket pussy, and it was even better than pounding her holes with one of his hemicocks each. The intense, clenching tightness of her vagina easily doubled the stimulation while it smushed his sensitive rods together, so much so that he could feel every feature inside her, every bump and ridge from the rippling of her vaginal channel to the rim of her cervix and the entrance of her Fallopian tubes. He also got to ogle her to his heart's content, enjoying the way her plump tits bounced and jiggled, watching how her brimful cum belly sloshed and wobbled with its creamy load, all the while the blissed-out expression on her face kept him thrusting full speed.

It didn't take long for the serperior to crave more than just look, however, and he eventually bent over his partner, slipping out his glistening forked tongue to sample a few wet licks of her sweaty, cum-soaked cheeks. Then he swiped his taster across her open mouth, down her neck, and all the way to her belly. Stopping in between for her tits, he latched onto each of her thick, swollen buds and suckled on them, greedily gulping down his own cum from her skin as if he was drinking her milk before he finished at her belly button. Swollen with his load, it had everted enough for him to suck on it like on her nipples, eagerly listening to the wet sloshing inside while he kept pushing her down onto his cocks over and over again.

At the moment, it was only cum that bloated the woman's belly, but even though Vincent was a serperior and Lydia a human, there was a chance that his relentless pounding would result in more than that since all the tests and experiments he had gone through had probably made him potent enough to knock up someone outside his egg group. And in case the initial gallons of semen hadn't been enough, the male was working his way toward another orgasm to flood her eggs with so much of his virile seed that they would yield to his sperm, whether they were compatible or not.

After another minute of frenzied pumping, the serperior finally arrived on the brink of his third climax, huffing and heaving for breath as the exhaustion from the excessive breeding session was finally making itself noticed. That didn't make his eruption any less potent than the previous ones, however, when he shafted all three feet of his cock meats inside his partner's cunt one last time. On the contrary, the extra tightness squeezed his two shafts in all the perfect ways to coax another huge nut from his internal cum tanks, and while his mind got sucked into the third vortex of orgasmic delight, his voice getting hoarse from all the rapturous howling and moaning, his constricted, pulsing fuck rods swelled with fresh cum.

Just a heartbeat later, the male's cum slits opened up to stuff Lydia's tubes with baby batter. The volley of spurts that followed forced it right into her ovaries, bathing those ripe eggs in virile sperm while ballooning her womb to even more excessive dimensions, because unlike before, his body wasn't in the way of her inflating midriff anymore, allowing it to swell into a positively gargantuan ball of thick, sloshing cum. All the more stretched, sweaty skin for Vincent to lavish with licks and slurps while he kept her impaled on his spurting rods, ensuring that every last drop of his potent load ended up inside her.

Meanwhile, the excessive stuffing launched the researcher's orgasm into overdrive, her whole body shaking while her folds trembled uselessly around Vincent's erupting breeding meat, too weak and stretched to clench anymore. Her voice had deteriorated into a raspy, shaky whimper, her arms limply draped over her gurgling cum belly while she gaped at the emerald serpent's blissed-out face with a blank, dopey expression, as if his third orgasm had finally wiped her mind clean.

The serperior breeder and his bloated partner spent another minute suspended in their orgasmic trance, with him spurting and nutting another two gallons into her womb before his third climax started to subside. Maybe the effect of the pills was finally waning, releasing his mind from their hormonal rush, or perhaps he was finally too drained to keep going because unlike before, he no longer felt the unstoppable urge to carry on. No, for once he was left utterly, thoroughly satisfied, and as the tension escaped his body like air a loose balloon, he simply slumped back onto the cum-stained couch and just lay there, as if someone had draped him over a clotheshorse. He couldn't even be bothered to pull his partner off his humongous cocks, just leaving her sitting in his lap, stuffed and plugged by his two rods until he either grew soft or, more likely, recovered enough strength to extract them from her.

For now, however, Vincent just lay there and basked in the afterglow of the most excessive fuck and largest nut of his life. He had always fantasized about what he would do with a true double erection. Thanks to the pills, he had finally found out, and the experience had surpassed his wildest dreams, even if he was slightly worried that he had broken his bloated, little partner in the process. Sure, she had been the one who had instigated this in the first place, but…

At that moment, a weak grin grew on Lydia's lips and she sluggishly looked at the serperior, a mix of cum and drool dripping from her lips as they moved in a barely audible whisper, "Fuck yeah, that was amazing."