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The Kinky Confessions of the World's Smartest Man

Summary:

A kinky celebration of Lex Luthor from the Superman (2025) movie for Kinktober 2025.

Notes:

Tags will be continually added as I post each day.

I may not be posting all 31 days, unfortunately, but I will post what I have.

Each installment will be around 500 or so words, some more, some less.

The full kinktober list can be found here.

Chapter 1: Day 1 - Masturbation (Lex/Clark)

Chapter Text

Additional kinks: (mild) ball torture

 

With Superman right in front of him, the shame is so real, it burns his cheeks and sends him into a flurry of mumbled embarrassment. How shameful it is to show how needy Lex Luthor really is, how desperate he actually is for Superman's touch. Of course, Superman doesn't touch him, but Lex wishes that he would. He wishes he would do anything but stand there with that stupid, smug grin on his face and his muscular, toned arms crossed over his broad chest. If he were in the mood for talking, he'd probably say Your taste is unorthodox, Lex, but at least we finally understand why you hate me so much. The only thing you want to do is touch me and you can't.

Lex would sneer at that, of course. But he doesn't. Instead, with his boxers around his ankles and his legs spread wide, Lex touches himself instead. He fondles his balls, flicking them hard enough to send pinpricks of pain lancing up his legs, pain that feels so good it makes him leak precum from the tip of his cock. He looks at the sight of Superman standing before him and feels small, so small that he could shrink in on himself and disappear for good. But he doesn't — instead, he keeps touching himself, stroking his hands up and down his cock as the head grows swollen and bright red.

"Damnit," Lex grunts under his breath. He casts his eyes away from Superman's gaze, refusing to look at him as he strokes himself harder and harder than before. His mind wanders, picturing white-hot images of Superman taking his cock into his perfect, smug mouth and sucking so perfectly. He'd take orders, of course he would, and would follow Lex's every desperate command and plea. He'd stroke Lex's balls and lap at his head, not even choking when Lex begins to thrust into his mouth.

Cursing, Lex bows his head, bearing his teeth against the onslaught of pleasure that floods from his cock and up his spine. He's helpless to draw this out, knowing its useless as he fists his cock frantically in front of the alien before him. Unable to help himself, Lex comes with a groan, spilling all over his hand and fingers. Looking up at Superman, his intense desire spills over into a fresh, seething hatred. He bares his teeth, cleaning off his hands with a tissue before scrambling for a remote and pointing it directly at Superman — a hologram, nothing more. He presses the top button and turns the image off with a click, and just like that, Superman is gone.

"Fucking alien," he hisses under his breath, and hastily adjusts his pants, sliding them up over his hips as he lays back against his bed with a sigh. He stares mutely at the ceiling, wondering if he could bring himself to hardness again by watching recorded clips of Superman fighting.

He decides against it. His disgust is too great, his shame too great. He'd wait until he got really pent up again, and maybe next time, he'd try relieving himself in front of Ultraman instead.

Chapter 2: Day 2 - Coming Untouched (Lex/Ultraman)

Summary:

Additional kinks: dirty talk, degradation

Chapter Text

Ultraman's thick thrusts send Lex into a slurry of dizzy pleasure. His eyes roll back as one hand fists through his creation's hair, the other grabbing desperately at the sheets. The noises he's making are shameful and utterly degrading; he'd never let anybody but his little thing hear him make the noises he's making now. Ultraman fills him up perfectly, the stretch making him feel ready to split in two. Every time his prostate is hit, he feels himself lose coherence for a moment, like he's nothing but a doll for Ultraman to fuck as he pleases.

Of course, he only follows Lex's orders. But for a moment, Lex allows himself to imagine he's entirely at Ultraman's mercy, whimpering and pleading with him not to stop as he gives Ultraman another hard yank by his hair. It's all so much, and as Lex's legs begin to shake, he's not so sure he's going to last much longer.

"T-tell me I'm yours," Lex pleads with him. "Say "you're mine.""

"You're mine," Ultraman growls under his breath, and Lex moans louder than before. It's all so much more white-hot when he pictures Superman having such a filthy mouth, so overcome with desire he's willing to drop the good-boy act for long enough to claim Lex as his own.

"Tell me," Lex rasps, "tell me I'm pathetic. Tell me I'm such a slut."

"You're pathetic," Ultraman grunts, his voice thick with desire as he pounds into him. "You're such a slut."

Lex curses under his breath, knowing he's not going to last even when Ultraman hasn't so much as looked at his aching cock. Lex's luxury bed rocks and creaks with the force of Ultraman's thrusts, and with Lex on his back, he can see Ultraman's face begin to twist into a grimace of pleasure. Lex grabs hold of his face with a desperation he doesn't recognize in himself and drags his lips down to meet his own in a harsh kiss, more teeth and tongue than anything else. The kiss is messy, uncoordinated and hot as Lex arches his back with a hoarse cry. He comes hard enough to see white flash across his vision before collapsing back onto the bed. Spent, Ultraman thrusts into him twice more before coming inside him, flooding him with warmth.

Lex's chest heaves for air as he instructs Ultraman to pull out. Kneeling above him, Lex can feel Ultraman's eyes on him, raking down his body as Lex works to catch his breath. That had felt so good, his body craves more like a street drug. Sitting upright, Lex eyes Ultraman's spent cock, licking his lips as he grabs him by the hips to pull him closer.

"Grind against my thigh," he tells him, his voice thick with want despite the protests of his spent cock, "and get yourself hard. I want you to fuck me again, and this time, don't hold back on me."

Ultraman doesn't seem to have an opinion on the matter. He mounts Lex's thigh and begins to thrust, his face blank and expressionless as Lex watches him with hungry eyes and an ache to feel everything Superman could ever give him.

Chapter 3: Day 3 - Nipple Clamps (Lex/Clark)

Summary:

Additional kinks: lactation, mpreg, nipple play, light breeding kink, masturbation

Chapter Text

Impregnating himself with Superman's child comes with a lot of perks. Of course, he hates the morning sickness, hates the hormonal rushes, and loathes the odd looks he gets from his subordinates. But the increased sex drive is something to be commended, even when it does get inconvenient at times.

His whole body feels more sensitive, especially his nipples. When he's on his back, in bed at night, he finds himself palming his cock through his slacks, touching his nipples as their sensitivity sends his whole body alight. Carefully, he'll reach down into his pants, too impatient to even strip off his clothing and begin stroking himself fervently, using his free hand to roll a hard nipple between his fingers. When he comes, he comes with a jerk of his hips and a curse spilling past his tongue, his orgasms far more intense and sudden now that he's with child.

It's only when he's feeling particularly pent-up that he considers wearing nipple clamps. He's heard about them in passing, but never tried them for himself. After browsing around the local sex shop in private, he purchases a pair for himself and brings them home immediately.

After a long day of meetings and hours spent in the lab, he knows he's not going to be able to drag this out for long, but the minute the clamps so much as touch his nipples, he feels his eyes roll back in his head. Tightening them slightly, he feels a thin stream of breast milk trickle down his chest, and the sight of it makes him shudder with arousal. His cock stands hard at attention without so much as a single touch, and as precum dribbles at the slit, he flicks both clamps with a yelp when pain lances through his body.

"Mmh," he whines softly, and begins stroking himself, unable to keep back a frenzied pace. There would be no taking his time tonight — the clamps work light an aphrodisiac through his sensitive body, and he wishes he had someone in bed with him to fondle him as he touches himself. He could hire a woman — or a man — but that would take time, and he's too impatient to wait. But, the thought sends white-hot pleasure through his spine, and as he fists himself, he can't help but picture Superman coming inside him, filling him up with his seed and putting a baby in him the old-fashioned way.

The vision sends him into a frenzy. He pumps his hand over his cock, toying with the clamps as hard as his sensitive body will allow. All at once, he comes with a needy whimper.

He's made a mess all over himself. Precum, semen, and thin dribbles of breast milk make him feel sticky and worn out, but he's too tired to care. He gropes for the tissues, gingerly wiping himself off as he removes the clamps from his chest and finds himself touching the baby bump over his stomach. He'd be due soon, a perfect son born of his and Superman's DNA.

Connor, Lex thinks to himself contentedly. He'd be a Connor when he's finally born.

Lex falls asleep, content, worn out, and entirely spent.

Chapter 4: Day 4 - Voyeurism (Lex/The Engineer + Ultraman)

Summary:

Additional kinks: coming untouched, praise kink, exhibitionism, anal sex, face sitting

Chapter Text

Angela likes to be watched, and Lex is helpless to deny her just about anything. Who knew the woman with super tentacle powers would be into some unorthodox sexual preferences? As smart as Lex is, he actually didn't see that coming as easily as he should have.

She likes to fuck him on his back with his legs spread in the air, reducing him to a whimpering, shuddering mess. He doesn't plead with her (at least, not out loud) but he does moan and whine as she pounds into him, refusing to touch his aching cock as she hits that sweet spot inside of him again and again.

And of course, per her request, Ultraman is standing in the corner, a silent, imposing force, simply watching them without comment of notable expression. The way Lex sees it, Ultraman wouldn't dare tell a single soul what he saw — and he's fairly sure he can't even if he wanted to, anyway. There are few things more embarrassing than having other people realize your subordinate is fucking you with her nanite-formed strap-on, or that she calls you a good, obedient boy in bed. But, as far as he understands, he's not a threat.

Still, being watched in such a vulnerable position secretly thrills Lex like nothing else. He wonders how he must look to an outsider — does he look weak? Pathetic? Desperate? He certainly feels that way. As he arches his back, Angela positions him on the bed in such a way that she can keep fucking him as she crawls over his face, bringing her dripping cunt right onto his mouth. As he sucks and licks at her folds, he can see Ultraman shift in the corner of the room, and Lex deliriously wonders if he's getting turned on by watching them. Ultraman has a fully functioning body with sexual reproductive organs — why wouldn't he get turned on?

Another shift, and Ultraman is brushing his hand over his groin, indicating that he's hard in his suit, and Lex moans at the sight of it as Angela rides his face. The frenzy of moans and sighs grows greater, the room thick with the smell of sex and arousal. Lex feels himself about to come untouched, and as embarrassing as that is, the shame only turns him on more. It's degrading. Disgusting. And it makes desire curl in his gut like nothing else, simply being watched like he's something beautiful to behold. In seconds, he comes without a single touch to his cock, grunting and bucking his hips as he spills all over himself, making a mess as Angela cries out in pleasure. Ultraman, palming his crotch, shudders in the corner as Lex feels his whole body go lax, focusing on Angela's climax as he comes down from his own.

He could already go again, he knows, and this time, he's tempted to have Ultraman join them.

Chapter 5: Day 5 - Finger Sucking + Dacryphilia (Lex/The Engineer)

Summary:

Additional kinks: begging, cum eating, anal sex, spanking, strap-ons, praise kink

Chapter Text

Lex is so pretty when he cries. Angela has never seen it before, but today, as tears pour down his gorgeous little face, she can't help but coo over him, cradling his cheeks as she pounds into him from behind. His fingers grip the sheets like a lifeline in freezing water, his hips bucking and shaking with each thrust. She never once touches his cock, and her makeshift strap-on is thick enough that it hits his prostate every time she slams back inside of him. The need to come is so strong, tears pour down his cheeks and drip onto the mattress, the sight turning Angela on even more.

"Such a pretty boy," she sighs. She brings her hand around to his mouth, shoving her index and middle fingers into his mouth. "Suck."

He does as he's told, licking her fingers into his mouth as he whimpers and moans in front of her, her thrusts making a satisfying slapping sound each time her hips connect with his ass. She groans as he takes her fingers deeper into his mouth, spurring her to increase her pace. He must be exhausted by now — her stamina is greater than that of most typical humans and they've been going at it for what feels like hours, but not once does he let up or ask to stop. He does beg for her to touch his cock, but she refuses, preferring to keep him right on the edge of orgasm for as long as he can take it. He's pretty when he begs. Beautiful when the all-powerful owner of Luthorcorp, the brilliant scientist and leader, is reduced to nothing but a puddle of pleasure and begging. Begging for her.

As he sniffs back another sob, Angela spanks him hard, hard enough to leave a mark on his ass cheek as he groans and surges forward, twisting the sheets through his fingers even tighter than before. A loose sob wretches through his chest as he bucks his hips, begging her to let him come. Finally, after what must have felt like a life time for Lex, she gives in and wraps a hand around his cock. She barely strokes him once before he's spilling all over her hand, coating her fingers in his semen. Of course, she makes him lick it all off when he's done and his crying has stopped, ever the pathetic man who's always so eager to serve.

Chapter 6: Day 6 - Outdoor Sex (Lex/Ultraman)

Summary:

Additional kinks: blow jobs, degradation, dubcon

Chapter Text

After the fighting in the fortress, Lex feels pent-up and in need of something to get the tension out of his system. Once Angela has the recording, she dismisses her and Eve back to the helicopter, ignoring Eve's whining that they can't explore more of the dense, icy tundra. He's already cold, but it doesn't matter — he knows what he wants. Grabbing Ultraman by the thick shoulder, he drags him around back of Superman's ice fortress and orders him to get down on his knees.

"You did a fine job back in there," he says, as if giving Ultraman some kind of quarterly review. He takes a moment to watch him, feeling himself shudder as Ultraman looks up at him, the mask covering his face. Lex rips it off at once, chewing on his lower lip as he regards him coldly. The wind stings at his ears, howling around them as he looks at the mess of hair on Ultraman's head.

"You're going to do an even better job here. Look at you. A big, great, powerful metahuman, on his knees in the snow. All because I told him to." The thought makes Lex twitch in his pants. Impatient, he unbuckles his pants, pulling out his cock and shivering as the icy air makes his warm cock feel cold to the touch.

"Put it in your mouth," Lex snaps, "and suck. Make it count."

Ultraman's warm mouth is an immediate contrast to the cold, and the change in temperatre makes Lex hiss between his teeth. He thrusts into the thing's willing mouth, grabbing him by the air and fucking him thoroughly. It feels so good, like Lex could come within minutes if he isn't careful. They don't have a lot of time, but Lex refuses to rush. He wants this to sting, to hurt, to feel good. He nods, tilting his head back and casting his eyes down to watch him work over his cock.

"Sucking it like a whore," he murmurs. "Look at you. You're nothing without me. Use your tongue, too."

Lex moans when Ultraman begins lapping at his sensitive head, pressing the flat of his tongue against the slit as he sucks him down. Drool begins to form at the corners of his mouth and dribble down his chin. With a firm grip on his hair, Lex keeps fucking his mouth, grunting and hissing at the sting of the cold around him. Anyone could catch them out here, Angela could round the corner and see them, and the thought makes Lex groan before spilling right down his throat. He pumps his hips, chasing the high until he's entirely spent.

"Swallow," Lex breathes once he's finished, and Ultraman does. "Atta boy." He fixes himself up, tucking away his cock just as he hears Eve's shrill voice echo with his name from the jet.

"Let's go back," Lex says, "before the bitch has a mind to come looking for us."

Together, with a satisfied smile across his lips, Lex leads Ultraman back to the jet.