Work Text:
The employees of Luthorcorp knew better than to question Lex Luthor who, if set off, can ruin your whole career. But some cannot help but glance at the figure beside him as Lex is giving a presentation on the new hologram launch for commercial use.
"Am I boring you?" Lex asks, eyeing a particularly sweaty CEO of queen industries.
"Nope!" Oliver grins forcing a smile and nudges Lucius, in a whisper asks: "Why didn't Bruce tell me this?!"
Lucius can only say nothing, as head of the Wayne Tech department, he isn't too in the know of Superheroes, he only ever does the equipment so the reason why Superman with Lex Luthor, how was he supposed to know?! Batman has already got enough on his plate in Gotham!
Superman knows that he is turning heads but doesn't seem to mind, politely on his knees like a Geisha going to play a number of her zither but no, that's the strongest superhero in the world... on his knees... in front of a bunch of people whose only power is money in their pocket. (And green arrow but they don't know that)
"Anyway..." Lex sighs, "If you're interested just let Happersen know."
He tugs at the leash around Superman's neck and more eyes turn towards them. While it was annoying that Superman is getting all the attention while introducing something that would improve their businesses, it's fine now given Superman is listening so well as he stands and follows him like a trained dog.
"Pst Superman, blink if you need help-" Oliver whispers while he passes by them. Superman can only smile nervously as the leash is insistent that he keeps up.
"Did he blink?" Oliver asks with a frown. "I swear his eyes are wide open-"
Lucius will just let Batman know and stay out of it. The last thing they need is Lex Luthor setting Superman onto Wayne Enterprises.
"You've distracted my customers, what should your punishment be?" Lex growls after they enter his office. Superman knows the drill and is silent as he waits for whatever punishment Lex decides to give him.
It's only been a night since Lex had the collar around the alien's neck, it was simple getting it on him when he has a hostage and Superman thinks all life is precious after all.
If Superman fails, Lex kills.
He hasn't though and did everything that Lex had told him to do. Do not speak unless Lex says is okay to, the leash must not tighten, a hand on his shoulder means kneel and listen to everything Lex has to say including commands. And one more thing...
"Beg for forgiveness," Lex growls, leaning against his table in expectation, leash still in his hand, Superman kneels almost immediately, the leash is only just loose enough if he kneels directly beside his shoe. He is quite good at this, Lex muses internally.
"Please master, forgive me," Superman's voice is deep and breathy as if something in him had just awoken from deep slumber. Lex simply stares down at him expressionlessly but feels a satisfied shiver shoot up his spine.
"No... I think I'll punish you instead, how about I electrocute the kid?" Lex pulls out his phone.
"No, please... do what you want with me, just leave the kid alone," Superman begs so nicely but Lex cannot melt that easily.
"It's your fault for taking all the attention-"
"But you had the collar..."
"I don't care," Lex growls, opening the application and going to pull the lever when Superman suddenly shoots up, knocking the phone off his hand. "You!" Lex exclaims, Superman has no super speed but he is still bigger and faster than him.
Superman realises that he has a lot power than he expected because his entire body is pressed against Lex's, he grabs his wrists.
"I don't want to hurt you," Superman looks at Lex in worry as he struggles against him. How is Superman still so strong? He is sure that the collar made it so that he cannot use his powers if not he would have used his super speed to grab his phone instead and maybe crush it.
Lex still has the leash in his hand, he pulls it and it tightens around Superman's neck. That momentary pain let's Lex push Superman out of the way, making him stumble. Superman forgets that Lex is not weak either, he tries to find his phone and dives for it only for Superman to yank the leash back, pulling Lex straight into his arms. That's the difference between him and a dog he guessed, he has dexterous hands.
"You stinking alien!" Lex flail his arms, scratching, kicking and hitting him in the face until he let go when one punch hits him squarely on the nose. Lex tries to find his phone again. This must be how they feel trying to discipline that stinking alien dog. But they must have kicked it somewhere because it's not on the floor anymore. Lex turns to have his back slammed against the wall.
Lex reaches for the leash he dropped somehow in the scuffle and pulls. Superman let's his neck tilt back before he surges forward. Lex half expected a head butt but instead his forehead hits his cheek instead. Superman as a hand on the side of his face and the other around his wrist.
Lex hadn't realised what he was doing until teeth scrapes against his neck before clamping down onto his neck.
Lex groans as he realises that Superman's erection is brushing against his own hardening member.
"God damn- dog!" Lex hisses in pain, he tugs at the leash but Superman is already breathless.
"Please master... I want to make you feel good~" Clark huffs into his ear, liking the way his ears blush a pretty pink under his heated breath. "Let me help you."
His words half processed through his foggy brain as he struggles to say 'no, fuck you.' But once he starts going it's hard to stop. Not when Superman is being so patient and good. It's annoying. His hand releases his face when he thinks that Lex had given up.
Lex doesn't reply he simply pulls collar towards him and angrily claims his mouth with forceful lip and bites. Superman's whole body seem to sing with relief and excitement as he unbuckles Lex's belt and Lex tugs at his pants. He continues to gently bite onto his neck, shoulder and even his nipples, making him yelp in pain and pleasure.
"Stop messing around!" Lex snarls.
"Yes master," Superman huffs in amusement as he wet his fingers then insert them into Lex. Saliva is hardly enough lubricant but Lex wants it to hurt, to feel the stretch, he didn't want to enjoy this too much but a part of him, the sick version of him gets off on the pain.
But Superman is gentle and methodical when stretching him. It's too slow for his tastes but with the fingers skillfully finding his sweet spot he finds it hard to complain.
Lex suddenly pulls at the collar, hooking a finger under it.
"You didn't do this before with anyone else did you?" Lex growls.
While it might be fun to say 'Yes' and watch him attack him with hatred and jealousy the same way he did when they first met, Clark didn't actually want to hurt Lex and he doesn't like to lie.
"No... why... am I doing a good job master?" Clark asks, nibbling at his pinkish ear. "I'm glad..."
Lex feels his heart flutter at the sincerity in his voice. He tries to hide it by grunting but Clark knows, even without super hearing, he can feel his heart pounding through his chest.
By the time Clark inserts a fourth finger he is a trembling, whimpering mess. Lex never thought of it before but he is very big, he doubts if it could even fit all the way as his length is rubbing against his cheeks. Lex shivers and tenses as his head teases his slick entrance.
"Hey, it's okay... we don't have to do it if you're not ready."
"N-no... just... go slowly," Lex mumbles against his shoulder.
"Okay," despite the scuffle, Superman knows how and when to hold back. Although it's torturous, Lex is unable to move, being trapped by Superman's body to make sure he doesn't hurt himself despite the eager humping.
In the haze of forgetting who this is, he claims Lex's mouth. Lex however remember who this is and bites down onto his tongue. Superman pouts, licking away the pain in his tongue.
"Put it all in already," Lex growls.
He punishes him by stopping and nibbling his neck instead. Lex hands tighten onto the leash but that only made less blood rush to his cock.
"Okay okay-" Superman wheezes when he feels a little lightheaded. He pushes in another inch and tosses the leash away from Lex's loosening grip before he can pull some more and actually snap his windpipe.
Lex jolts as Superman enters another inch until his balls are snug between his cheeks. It takes them a second or two to adjust, Lex to the stretch and Clark with Lex's tight canal.
"I'm going to move now... okay?" Clark asks with the softest voice. Even after he had bit him... to be fair he did bite Lex first.
"Do it," Lex growls.
He moves and Lex had to struggle to not embarass himself and climax right there as his dick easily hits his prostate without the use of x-ray vision.
"Give it to me, good boy," Lex whispers into his ear. Superman whines he wants to go fast but he doesn't want hurt him. He would have stopped if Lex shows any discomfort but his pitched moans and fingers digging into his cape encouraged him to go faster and faster.
"Lex, I'm close-" Superman whines.
"What did you call me?" Lex hisses as his leg kicks his side.
"Huh?" Superman asks dumbly none of the blood is still going to his head apparently.
"You're supposed to call me master, bad dog," Lex growls.
Superman huffs at the nickname, Lex hadn't expect him to play along however. "Master~ should I call you daddy too?" He hums.
Lex groans, nodding he tries to reach for the leash only for Superman to grab his arms and pins them to the wall.
"Daddy's so tight and wet for me-"
"Fuck- shut up!" Lex exclaims, he is not going to cum from his dirty talk. Superman grins cheekily like he did it on purpose. "Daddy- I'm going to-" he groans into his neck and bites as his hips snap up, deep into him. There was a pause where Lex is reeling from being fucked senseless when he feels something stretch at enter him.
Lex had not been paying attention as to what is going on down there if he had he would have noticed something was off. But how was he supposed to know Superman's dick is different than a human's? His appearance seem all human. His muscles were relaxed which is good because he wouldn't have been able to take the knot. Lex shudders as Clark holds him upright as he spills his load into him.
"What the-" Lex gasps as he finally looks down to see them stuck together.
"Sorry..." Clark had also forgotten that his knot takes a long time to soften so... they were going to be stuck like this for a while. He just couldn't help it.
Lex tries to struggle away but Clark holds him. "Ah wait... it'll hurt if you forcefully put out."
"Oh my god-" Lex only knew cats and dogs knotted, he didn't know Kryptonians also knots. "Are you actually a dog?"
"N-no!" Superman exclaims.
"I have work!" Lex exclaims in horrid realisation.
"I'm sure one day off wouldn't hurt," Superman smiles sheepishly.
"You idiot alien!" Lex exclaims, kicking him but it's weak and futile.
"I'll take you to the fortress to sleep this out," Clark replies, wrapping Lex's body in his cape. It's still inside of him, perfectly plugging the sloshing semen inside of him.
"No! Are you crazy?! I'll freeze to death! Go to my place."
Clark dumbly nods and flies them over, following Lex's instructions like a good boy.