Work Text:
Clark watches Bruce with a pout. When he came over he didn’t expect the night to go like this, they were supposed to watch movies but instead Clark can do nothing but watch Bruce type away on the batcomputer. Technically, he does know why Bruce is acting this way. When he arrived in Gotham he was quickly side tracked by calls for help in the park. It didn’t take him long to find the problem once he started heading that way, the vines and plants growing unnaturally over the roads made it easy for him to realise that Poison Ivy is causing problems again.
He could see Batman already at the scene, seemingly fighting Ivy while also trying to help civilians so Clark was quick to join him, leaving Bruce to handle Ivy while he saved the civilians that had been caught in Ivy’s vines. Really that had been the downfall of the night because after he saved the civilians he had turned to see a plant that looked ready to explode behind Bruce and he had acted without thinking, pushing Bruce out of the way and taking the puff of pollen that came from the plant. He had instantly been in searing pain, which he hadn’t expected, and by the time it subsided Bruce had already taken care of Ivy. Clark can remember how angry Bruce had been at him and he can also remember how the anger had quickly shifted to worry over something that Clark couldn’t see.
Bruce had dragged him back to the cave but wouldn’t explain anything to him and it wasn’t until Bruce made him strip and take a shower that he finally saw it. He was in such a rush to get to Gotham that he hadn’t completely taken off the costume that he was wearing for the costume party at the Daily Planet and the black werewolf ears that had been sitting on his head are now fused to his head and moving just like a dog’s ears would, the tail he was wearing to go with them is also attached to his tailbone and it tucked between his legs as he took in his new appendages.
He had washed the pollen off himself and pulled on pajamas and that is what led to him here, staring at Bruce as he types away. His Superman suit is locked up in an airtight box and the computer is analyzing the pollen that is still stuck to it. His tail is tucked against his legs and his ears are pressed to the top of his head, a pout on his face. Clark knows that this is important, it’s not like him to get affected by things like this because he’s immune to airborne gases and pollens and usually his skin is invulnerable so he doesn’t get affected by things on him either. That leaves the question of why this specific one affected him and while it is an important question Clark would much rather be on the couch watching movies like he and Bruce had discussed before all of this happened.
When he breathes out a whine slips out unintentionally, much like a dog that’s being ignored. Bruce turns to look at him finally and it makes him perk up, his tail wagging softly behind him. “What? Are you in pain?” Bruce asks, looking him over and letting his eyes linger on the wagging tail.
“No… But do we have to stay in here, can’t we go to the couch?”
Bruce levels him with a glare and it makes his ears wilt. “Clark I need to figure out what she did to you in case it’s dangerous.”
“If it was dangerous then it would have already hurt me, I’m fine! Please,” He pleads. “After a few movies I promise I’ll let you run as many tests as you want.”
Bruce sighs softly, glancing at the computer before back at Clark. “Two movies. The computer needs time to figure out what this pollen contains. After those movies it should be done and we will go back to figuring this out.”
Clark’s tail wags so harshly that he can hear it but he doesn’t care, just nodding. “Okay!”
Bruce stands and Clark follows, his tail wagging the whole time that he follows Bruce up to the manor. It’s weird having the tail, mostly because he can’t completely control it, but he can’t say that he minds having it. The ears are the same way, for anyone else they might be overwhelming because they can certainly hear better than normal human ears but Clark is used to having ears that can do that. Neither of the appendages are holding him back at all. Bruce settles onto the couch and Clark stares at him. Usually he would sit down beside Bruce so that they can cuddle but before he can really think he drops to his knees beside Bruce’s legs, leaning his head over to rest his cheek against the bat’s thigh. Bruce stares at him with slightly widened eyes. “What are you doing?” He asks, a hand coming down to run through Clark’s hair.
Clark isn’t really sure himself. “I-I don’t know, this just felt right,” He answers, relaxing under the petting.
Bruce gives him a worried look and pulls his hand away. A loud whine falls from him at the sudden lack of touch and it shocks even him. “Clark I’m worried, I know you’re usually a little whiny but this is another level. Maybe we should-”
Clark shakes his head quickly. “No, I’m fine! It’s just…”
He trails off, pushing his cheek against Bruce’s thigh even more. He’s not sure what’s wrong with him but he just wants to be touching Bruce, to have his hands on him. It’s not often that they get to spend time together like this, usually they get interrupted or they only have a few moments together before one of them has to leave. This night is the first time that they’ve both had time to spend together like this and he just feels so needy suddenly. He wants Bruce to touch him, he needs it. Usually he has better control over himself when he gets like this but maybe that pollen really is affecting him.
“Just what?” Bruce leans forward, his hands coming up to grab Clark’s face and hold him. “What’s going on?”
Clark’s ears wilt as he looks up at Bruce. “I just want to touch you and I want you to touch me,” He mumbles. “It’s been so long since we’ve had time together that's just us. I missed you and you haven’t paid any attention to me yet because of this situation and-”
Bruce coos softly, nodding. “Okay Pup, it’s alright. I’m not going anywhere so let's watch a movie, okay?”
His tail wags against the floor as he nods. He settles with his cheek pressed against Bruce’s thigh, watching the television as Bruce picks out a movie for them to watch. He doesn’t care what it is, all he can focus on is the warmth radiating off of Bruce’s body and the hand in his hair that keeps scratching behind his ears. It feels so good and he melts against his boyfriend.
Halfway through the movie he starts to rub his cheek against Bruce’s thigh, arms wrapping around Bruce’s calf as he does. The touch that he was enjoying before no longer feels like it’s enough, he needs more. The hand in his hair stops and he whines softly, turning his head to look at Bruce. Bruce is looking at him with an unreadable expression. “Pup.” Clark’s ears perk up at the pet name, tilting his head in question. “Are you feeling alright?”
He nods. “Just not enough,” He mumbles, turning his head to bury his nose against Bruce.
Bruce always has an underlying scent of cologne but since he was out as Batman Clark can also pick up on the smell of sweat and the natural musk that makes up Bruce. The scent makes his tail wag and he lets out a breathy whine, his cock twitching to life. “Clark…”
Clark turns his head to look at Bruce again and his eyes trail down to the man’s crotch before his head shoots back up. “Can I suck you off? Please?” He asks quickly, his ears pushing back as he looks up at Bruce with a pleading face.
“I’m not sure we should do anything like that right now, Pup. I think you need-”
“No, I can handle it, promise,” He whines, his grip on Bruce’s leg tightening. “Please, Sir?”
Clark can hear how Bruce’s heart skips a beat and his tail wags, knowing that’s a good sign. “Clark,” Bruce growls. “We should not have sex when you’re like this, we don’t know the side effects.”
“I’m fine, it’s just ears and a tail… I already wanted your attention before all of this,” Clark whines, pulling away just to spread Bruce’s thighs and situate himself between them. “Please?”
Bruce stares at him and to anyone else it might seem like he’s just glaring but Clark knows he’s fighting with himself mentally. He leans forward to mouth at Bruce’s clothed cock, his tail starting to wag when he feels it twitch. Bruce sighs, a hand coming down to grab his hair. “Such a naughty boy,” Bruce huffs. “Go on then.”
Clark’s tail is wagging so hard that it creates a loud thump every time it hits the floor and he excitedly reaches up to pull down Bruce’s pants and boxers. “Thank you, Sir,” He mumbles as he leans in to lick the underside of Bruce’s cock.
It twitches against his tongue and within a few licks Bruce sits completely hard against his tongue. He wastes no time in starting to suck at the tip, his tail wagging even harder as he does. “Keep wagging your tail like that and you’re going to give yourself happy tail syndrome before I can fix you,” Bruce says, voice soft and breathless.
Clark hums softly, just taking more of Bruce into his mouth instead of stopping the erratic wagging that his tail is doing. Honestly he’s not sure he could stop it if he wanted to, the tail is reacting to his emotions completely and he’s so happy to have his mouth on Bruce that there’s no way he would be able to stop it. He slides further down Bruce’s cock, holding Bruce’s thighs tightly as he does. Bruce lets out a happy moan and Clark’s tail wags even harder, his ears tilting towards Bruce so that he can hear him better.
He starts to bob his head, starting at a quick pace. Bruce’s hand that was previously absentmindedly petting through his hair suddenly tightens, the grip momentarily stopping him from moving so that he doesn’t pull his own hair out. He lets out a whine and even to his own ears it sounds pathetic. Bruce chuckles softly. “Wait,” He playfully scolds. “If you’re going to do this then you need to prepare me too, okay? That means you need to go get lube.” The idea of having to leave makes his ears wilt. “No. None of that. You have superspeed, you can be back before I even blink. Go get it.” Clark pulls off Bruce slowly as his hair is released and he’s gone and back within a second, holding the lube up so Bruce can see it. “Good boy, now go on.”
Clark wastes no time, leaning back in to start sucking Bruce’s cock again. His tail is once again wagging wildly behind him, his ears pointed at his boyfriend. As he bobs his head he lubes up his fingers, his other hand pulling Bruce’s hips towards the edge of the couch so he has more room. Bruce moans at the manhandling and Clark lets out his own happy noise as he sucks at the tip of the man’s cock, one of his slicked up fingers moving to circle around Bruce’s entrance teasingly.
“Don’t start teasing me or I won’t let you fuck me,” Bruce practically growls at him. Clark whines and he nods as best as he can before quickly taking more of Bruce’s cock into his mouth, sliding his finger into Bruce as he does. He can hear the way the man’s breathing hitches at the touch and it makes Clark moan around his cock. He times his thrusts with the bobs of his head, delivering soft licks and sucks when he can. “Good boy, give me another.”
Clark doesn’t have to be told twice, adding another finger next time he thrusts in and reveling in the noise he gets. He knows Bruce’s body almost better than he knows his own and with his mind focusing on his fingers it takes only a moment for them to slide into Bruce’s prostate. The reaction is instant, Bruce’s back arches and a breathless gasp falls from him. The reaction makes Clark’s tail wag even harder and he ignores the loud thumping that his tail is making, especially with it now starting to hit the coffee table. He starts to hit Bruce’s prostate with every thrust, adding a third finger as he does.
Bruce is letting out soft moans with each thrust and it just spurs the Kryptonian on, making him suck and tease his tongue around Bruce’s cock desperately. “Shit,” Bruce breathes out, his hands tightening in Clark’s hair. “Okay, enough.” Clark whimpers desperately, curling his tongue around the head of Bruce’s cock. His back arches, a stuttered gasp falling from his lips, and it makes Clark’s tail smack against the coffee table even harder. “C’mon Pup- Want- Fuck me,” He stammers.
Clark does pull away at that, panting even though he doesn’t actually need to breathe. “I can?”
Bruce nods, spreading his legs to make room for Clark to fit more of his body between them. Clark does so without any further encouragement, sitting up on his knees to lean over Bruce’s body to connect their lips as he pulls his own pants down. His hands are planted next to Bruce’s head, caging him to the couch, and Bruce reaches up to grab the back of Clark’s neck. Clark whines into the kiss as Bruce licks into his mouth. “Get inside me before I go find someone else to fuck me, Pup,” Bruce mumbles against his lips. The words make Clark growl softly, the thought of someone else touching Bruce makes jealousy burn in his stomach. He lines himself up with Bruce’s entrance and pushes in quickly, getting a loud groan in reply. He smiles to himself at the reaction but before he can pull out Bruce wraps his legs around him. “Wait.”
Clark freezes at the order, millions of thoughts running through his head. Did he hurt Bruce? Is Bruce angry with him? He lets out a confused whine, his ears drooping. “Wha-”
“Stay,” Bruce tells him, cutting him off. “Don’t move until I tell you to.”
Clark whines again, leaning in to nuzzle into the crook of Bruce’s neck. It’s not often that Bruce stops him like this, making him stay completely still within him and not letting him even grind, and Clark both loves and hates it. It feels so good, especially when Bruce squeezes down on him, but he also wants to move and fuck Bruce into the couch. It leaves him needier than usual and he already feels like if he doesn’t fuck Bruce he’s going to cry. “Sir, please?” He pleads, sniffing at the scent that clings to Bruce’s skin.
Bruce doesn’t answer him, just holding him close. The man’s fingers start to slowly drag along his back, just featherlight touches that make him shiver. “I told you to stay, don’t make me repeat myself again,” Bruce finally says, squeezing down around Clark’s cock.
He whimpers, his tail tucking as well as it can with the couch in the way. “I thought you wanted me to fuck you?” He questions, voice giving away just how needy he’s feeling.
Bruce chuckles at him, kissing at his neck and continuing to slowly drag the tips of his fingers over the Kryptonian’s back. “I did, I still do, but you know what I want even more?” He asks, voice low and teasing. Clark lets out a questioning whine. “I want to see you crying and begging to fuck me, so if you want to fuck me you better get on with it.”
Clark’s mouth falls open in a mix of shock and awe and he pulls away to look at Bruce, who just raises an eyebrow at him and squeezes around him again. “Wh- But I-”
Bruce pushes his hips back against Clark, grinding against him and making Clark’s hips jump a bit. “Don’t you want to be a good boy?” Bruce teases, voice a little patronizing. “Don’t you want to fuck me?”
Clark’s ears press back against his head, a pout on his face as he looks at Bruce. “Sir please? I’ve been so good, I want to fuck you, please?”
Bruce hums, looking unimpressed. “You can do better than that Pup.”
He whines again, his head falling to rest his forehead on Bruce’s chest. This isn’t fair and he feels like if he doesn’t get to fuck Bruce he’ll lose his mind. Bruce always feels so good wrapped around him and this time is no different but sucking on the man’s cock has him feeling especially needy right now. “Please?” He whines, looking up again with pleading eyes. “I really want to fuck you Sir. I’ll do a good job, promise.”
Bruce tilts his head at him before nodding. “Go on then.” Clark’s breath hitches and he pulls out to quickly thrust back in. His tail starts wagging behind him again, he can feel the air coming off of it, and he starts a fast pace as he leans in to mouth at Bruce’s shoulder. Bruce’s hands come up to grab his shoulders, soft moans coming from him with each thrust into his prostate. The moaning goes right to Clark’s head and he almost feels light headed as he continues thrusting into the man. “Stop.” Clark whines, shaking his head as he continues his pace. “Clark,” Bruce growls at him, grabbing his hair and forcing his head up so that they’re looking at each other.
The look on Bruce’s face makes him stop, his cock still buried inside the man below him. “Sir,” He pleads, his voice a little watery.
“Hm?” Bruce teases. “You think you deserve to fuck me after you didn’t listen to me when I told you to stop?”
Clark’s ears press back against his head again, shaking his head. “No, ‘m sorry,” He whimpers. “I want to be good.”
“Prove it.”
Clark’s dick is so hard that it hurts and it twitches within Bruce, who just squeezes around it. He lets out a pained whine, tears actually building in his eyes. “Please, I-I can’t, Sir it hurts,” He pleads, desperation clear in his voice as his hands move to grab Bruce’s hips to keep himself grounded. “Please? I promise I’ll listen, do whatever you want, please please pleas-”
He can hear the way Bruce’s heart skips a beat at the begging and before he can react to it Bruce is nodding. “Alright, go on. Don’t cum until I do. You have to earn it.”
Clark is nodding before he can stop himself, he’ll agree to anything if it means he gets to fuck Bruce. He immediately starts an animalistic pace, holding Bruce so tight that he knows there will be bruises later on and leaning in so he can continue smelling the natural musk of his boyfriend. He’s not sure why he suddenly feels the need to be surrounded by the smell of Bruce, usually he enjoys the smell but not to this degree, but it just adds on to everything and he feels his orgasm growing quickly. As it grows everything starts feeling amazing, like it’s all flowing through him in a way that it never has before.
Bruce makes a noise that sounds like a mix between a moan and a confused ‘huh’ and Clark looks at him. “Shit, what is that?”
“H-Huh?” He stammers, his hips not stopping.
The man’s head falls back, his mouth open in a silent scream. “Fuck! Clark wha-at is that? So-oo big.”
Clark is confused and pulls back to look at Bruce. It’s then that he sees it, the base of his cock is growing and each time it enters Bruce it stretches him even more. It only clicks after a moment of staring at it, the pollen had given him more than just the ears and tail of a dog, he’s got a knot like a dog would too. “Knot,” He mumbles.
Bruce fights to lift his head, taking stuttered breaths as he looks down. Clark watches the way the man’s eyes widen and the moan that follows it makes Clark’s cock twitch. “Shit… C-Close.”
The Kryptonian doubles his efforts, fucking into Bruce quicker and watching as the knot grows even bigger. When it gets too big for him to pull it out he doesn’t lose his pace, instead just starting to grind into Bruce. The man makes a choking noise and Clark watches him paint his chest in cum. The sight makes him whimper, desperately grinding into his boyfriend and moaning at the way Bruce is squeezing around him.
It only takes a few moments for him to cum, the knot popping and locking them together. The feeling is like nothing else he’s ever experienced before, making him shiver and get teary eyed as pleasure courses through him so powerfully that he momentarily feels like his vision has gone white. It’s almost too much, especially with his hips jerking at the powerful orgasm, and it takes him a while to come down enough that he has control over himself again.
Bruce is panting under him, rubbing his back as he stares up at Clark. “Okay Pup?”
Clark nods tiredly. He wraps his arms around Bruce and carefully rolls them over, leading to Bruce wincing as the knot pulls at his entrance. “Sorry,” He mumbles, pulling Bruce down so he can nuzzle into his neck.
“You’re alright,” Bruce coos, pecking him on the lips as he pets him. “I’ll fix you when this goes down, okay?”
Clark can’t help the way his tail wags, a dumb smile on his face. “Okay.”