Chapter Text
Brian can't help himself. He takes his brother in a hug, clinging so so tightly as he becomes overwhelmed by the gravity of the situation. They had their first joint kill - even if he did all the work and Dex just watched - but more importantly...
Dex called him Biney!
Oh, he's inconsolable. Brian thinks he hears baby brother gasping from lack of air, but gosh, all he can think of is Biney Biney Biney! The single word echoes around the cavern of his mind, and he visualizes the shape of Dexter's soft mouth as he says it, which morphs into darker dirtier thoughts of his cock sliding in deep until he can feel soft breaths against his skin and see his brother's plush lips stretched around him, and-
Dexter kicks him in the balls. Brian shouts, curling into a heap and groaning in pain as his brother hacks up a lung next to him. The both of them take a few minutes to recover.
He sits up when the pain finally subsides, body soaked with blood that his clothes had absorbed from the floor. Dex looks warily at him, probably thinking he's going to get crushed in Brian's arms again.
"Dex, how do you feel?" He asks to break the tension. Little brother glances around the room at the blood-spattered walls, and the demeanor from before their little interruption returns.
The boy stands, admiring Brian's work with dark eyes that he wouldn't mind making an appearance during other equally-pleasant activities. Dex reaches a hand out but pauses, looking to him for approval.
"Go ahead." He encourages, watching as slim fingers glide across bloodied skin and dig into cut flesh, memorizing the texture of muscle, organs, and bone. The squishing sound little brother's hand makes as he feels around is obscene; Brian adjusts himself in his pants.
Dexter starts to squirm after a few minutes, his face flushing a light pink. Seems like baby brother's enjoying himself over there. Maybe he should go help out.
"Having fun?" He asks as he comes to stand behind Dex, wrapping his arms around the boy's stomach. His little brother flinches and bites his lip - to hide a cute noise, perhaps? So precious. Brian is the luckiest man alive to have a brother this adorable.
"Uh- mmn! Yeah, she feels g-good."
Oh, fuck. He won't be able to hold back if Dexter keeps talking like that.
"Yeah? And how do you feel?" He winds his arms tighter and lower, closing in on the sweet prize between baby brother's legs.
"Umm..." Dex pauses, mouth slightly agape. Does he not know? Has the poor boy never felt pleasure like this before? Well, it's a good thing Biney's here to help. Biney will show little brother what he needs.
"Is it a feeling," he starts, splaying his right hand over Dexter's pelvis, so so close to his brother's precious cock, "down here?"
"Oh," little brother sighs. "Yes."
Brian's fingers inch ever closer, his hold on Dexter's body tightening like a constrictor around its prey. He ghosts his lips over the shell of his brother's ear and says quietly, "Do you want me to help?"
"Yes. Please, Biney." Not only does Dex ask to be touched, but he calls him Biney again. Is this heaven? Has he died and, by some stroke of luck, ascended rather than descended? Whatever it is, Brian won't take this moment for granted.
He brings his left hand under the boy's shirt, rubbing up the soft flesh of his stomach and chest, brushing long fingers over each rib and resting his palm heavily over his brother's sternum; Dex moans when Brian's other hand slides the rest of the way down to cup the small bulge in his pajama pants. Brian massages the flesh under his fingers and gently takes an earlobe in his teeth, making baby brother moan again and rut into his ministrations.
It takes no time at all for the boy to reach his limit, his virginal cock unaccustomed to big brother's deft hand. Dex cries out so sweetly as he comes, soaking through both layers of fabric and dampening Brian's skin.
Fuck, he's so wet, like a girl, he can't help but think, and that inspires some truly filthy ideas that serve to rile him up more than he already is, his cum-soaked hand itching to get a feel of the undoubtedly softer skin between baby brother's legs.
Brian strips off his brother's pants and underwear, strings of slick cum snapping as they're pulled away from Dex's body, and his thoughts keep circling back to wet wet wet. He finally takes baby brother's adorable, tiny little cock in his hand, and-
It's so fucking wet.
Dex whimpers, twitching in Brian's grip and leaking more fluid that drips down his fingers and onto the floor. The hand that was exploring their victim's body wraps tightly around Brian's forearm, and fuck, that's wet too.
His little brother is just so wet. With blood, with cum... he could do anything to the boy and he'd still be soaking wet and begging for more.
Brian kisses down Dexter's neck, and oh how he wishes he could give his baby brother a line of bruises down his throat and all the way to his toes, but they'd surely be separated more permanently than a locked front door and he couldn't bear that kind of distance after having the boy in his arms like this.
He firmly strokes Dex's cock which quickly hardens for a second round, the boy crying out from the slick pressure around him. Brian rubs his unoccupied palm over his brother's lithe body, feeling the muscles twitch and tense up from receiving more stimulation than they can handle.
"Biney, oh... too much!" Little brother whines, but despite the complaint, he makes no attempt to get away. Precum pours out, pooling in Brian's hand and on the floor between their legs.
"You're doing so well, so good for Biney." Brian says, because he is, and he feels Dexter's cock twitch in his hand.
"Oh, you precious thing. Do you like it when I say how good you are?" His brother whines loudly, hips grinding forward into his strokes.
"Hah! Yes, oh god- Biney!" Dex moans, his blood-slick grip on Brian's arm tightening. Shit, how sweet is that?
"Fuck, such a good boy." He says it directly into his brother's ear, and the strangled sound he makes is the hottest thing Brian's ever heard. Little brother throws his head back, arching as the pleasure intensifies, and his mouth hangs open so no noise is muffled.
Dex is so sexy like this that Brian can't help himself and bites into the soft skin of his shoulder, and the boy shouts as he comes a second time. Baby brother shakes in his arms as he works him through it, gasping and whimpering after two consecutive orgasms.
The bite mark has a few beads of blood welling up so Brian runs his tongue over it, savoring the metallic flavor in his mouth. There's a different flavor he'd love to try even more, and his mouth waters just from imagining it on his tongue.
"Dex, you wanna go for another round?" He asks.
His brother predictably shakes his head. "No, I can't."
"But you'd be such a good boy if you do. Please?" The boy's cock twitches again, leaks a little.
"No, I really can't." Brian grins. He strokes Dexter until he's half-hard, wrenching out a few startled moans.
"I think you can." He says deviously. "Look, you're already getting it up again."
"Oh god, Brian no."
Brian grabs Dex by the shoulder and turns him so they're face to face.
"No? Don't you trust me?"
"Of course I do! It's just-" Brian drops to his knees. "Oh."
"Oh." Dexter says again when he starts to lap up the cum coating his hand. He watches as little brother's gaze darkens with every drop of fluid his tongue collects.
The salty flavor of his baby brother's release is heavenly, just enough to tide him over until Brian can have some straight from the source. As he licks his hand clean, all he can think about is Dexter's cock - the sensation of spongy flesh in his lips as it moves in and out, squishing between his hard palate and tongue; how the boy would shudder and cry if he were to gently scrape his teeth along the shaft...
His aching hard-on makes itself known, begging to be freed from the confines of his jeans. Well, it can wait a bit longer. No need to rush.
Brian focuses back on his brother's face to see it morphed into a gorgeous, dark expression so captivating that a sudden wetness on his nose and cheek is startling. He shifts his gaze and gets an eyeful of Dex's hard dick in his face.
"So you can go another round, hm? Don't worry, Biney's gonna take good care of you."
He flicks his tongue out to lick away the half-dried semen on Dexter's skin, moving methodically across his groin so he doesn't miss a single spot. He occasionally travels down to suck and bite at the boy's soft thighs, bringing out the cutest moans and whines.
Baby brother cries out and grabs a fistful of Brian's hair when he leaves a hickey right at the crease of his thigh, and he groans into the perfect flesh. He can't help but leave several more in the same area, overcome by the urge to mark and claim.
"B- hah, Biney! Mmn! Gonna- again!" Dexter pants, holding the edge of the table in a white-knuckled grip.
"Really? But I haven't even gotten to the main course yet." Brian pokes teasingly at the flushed head of his brother's cock. A dribble of precum leaks out and the boy's legs start to shake.
When he goes right back to licking and sucking and kissing his body, Dex starts to whimper so pitifully that he almost feels bad for wringing out his precious baby brother like this. But the sweet noises escaping Dexter's plush lips and delicious taste of his skin is more than worth it.
Brian brings his brother off a third time, earning him a broken moan and a pint-sized facial. The feeling of his baby brother's cum dripping down his face is unbelievably hot, making his neglected boner ache.
He gives Dex some time to catch his breath, licking his lips and admiring the gorgeous body in front of him. This whole time, he's been so focused on pleasuring Dex that his own needs have been pushed aside, so Brian takes this opportunity to indulge himself.
He just can't get enough of baby brother's smooth legs, damp with sweat and lightly freckled, especially how he can feel the muscles twitch under his fingers when he squishes the soft flesh in his hands. His brother hums softly, mistakenly believing that Brian's ministrations are a soothing gesture.
Dexter starts to relax, leaning back against the table, and the action raises his shirt up just enough to expose the tip of his now flaccid cock. There's a droplet of cum clinging on for dear life that Brian just has to taste, so he finally, finally wraps his lips around the head and receives a burst of wonderful saltiness on his tongue.
His brother flinches, tensing up and gasping in shock. The hand still threaded in Brian's hair tries to pull him off, but the boy is no match for big brother's superior strength. He continues despite Dexter's protesting, hopeful that his mouth can wring out just one more orgasm so he can have a whole mouthful instead of just a single drop.
"Biney, no more- can't, not again-" Dex practically sobs. Poor thing. Brian would feel sorry for him if he wasn't getting hard again.
"Yes, you can. Didn't I say I was gonna take care of you?" He looks up at his little brother's distressed face and almost melts at how cute he is. He coos and shushes the boy, using both thumbs to rub gentle circles on his quivering thighs.
"Didn't I?" Brian asks again when all Dexter does is sniffle and barely succeed in holding back tears. Baby brother eventually nods, a small and shaky movement that's so fucking adorable.
"Good boy." Those two words draw out of his brother a whimper and more of the liquid ambrosia that he craves. The act of licking it up makes the boy start to cry, tears rolling down his cheeks and knees buckling.
Brian catches Dex around the waist, pulling him down before he can fall. The weight in his lap is almost directly atop his erection, little brother shuddering as he feels the hard flesh and rough denim pressing and rubbing painfully against his delicate body. It's so tempting to grind upwards and watch his brother break down, but he's not that cruel so he comforts the boy instead.
"Poor thing, must be tired from all that standing up, huh?" He coos, stroking a hand through Dexter's hair. "How about we get you lying down?"
Dex sniffles and looks at the floor skeptically. "In the-"
"Blood? Yeah. I think you'd look so sexy in red. Got any attachment to this shirt?" Brian says as he pulls the fabric up and off. Little brother shakes his head so it gets chucked... somewhere. They'll find it later.
Now the entire expanse of his brother's body is visible, and he can't help but rove his eyes over the boy's naked form. Brian flips Dex onto his back, making the blood splash and drench his milky pale, freckled skin.
Fuck, he was right about baby brother being sexy like this. This image of Dexter would fit perfectly in a museum among the world's most famous paintings, with his blotchy, tear-stained cheeks and pale blood-spattered body spread open to entice him closer - touch me, Biney! - and those supple thighs framing the boy's hard, leaking cock that's flushed a gorgeous deep pink, almost red.
Brian reaches out to tightly grip one of the thighs, spreading his baby brother even wider; he manipulates it outwards and up until the knee is almost to Dex's shoulder and oh god, that kind of flexibility is unbelievably hot and makes him wonder what kind of nasty, filthy things his brother gets up to to be able to bend like this. Dexter whines from being so exposed but honestly it's his own fault for being such a fucking minx. How is he supposed to control himself when his baby brother is even better in real life than his dirtiest fantasies!?
Bringing the boy's other leg over his shoulder, Brian bends down to take a deep breath of his brother's scent at the underside of his cock right where the base connects to his balls, and it's so sublime that he tastes the skin there too, laving his tongue over that spot until Dex is crying again and begging for Biney to quit teasing.
Quit teasing, says the boy who wanted to stop two orgasms ago. Okay then. Brian wets his lips and swallows his brother whole, the cock in his mouth taking up barely any space, which is just adorable and fits perfectly with the rest of baby brother's adorable body. A hard suck at the base makes Dexter practically scream, and he's glad the house is soundproof because he wants to hear every noise unfiltered.
Brian rubs his tongue over the underside, dragging another round of sobs out of the boy as he weakly thrusts upwards, too tired to do much of anything except lie there and take it. He pulls back to focus on the head and manages to wring out another few drops of salty fluid, which spurs him to hollow his cheeks and take Dex's cock fully again.
"Bineyyy! Oh, hah- p-please!" Dexter whimpers, reduced to a blubbering mess beneath him. Brian pulls off fully and smirks when his brother cries and ruts into the air.
"Please what, Dexy?" He breathes, exhaling onto the tip and watching as the boy sobs.
"Um-mmn! I-I uh, hah- fuck! Oh! Biney!" Aw, poor thing can't even string together a sentence, but that's to be expected when big brother is being mean and sucking bruises into the skin at the base of his cock.
Brian takes pity and stops teasing, swallowing Dexter back down and blowing him properly. He hums when baby brother thrusts up so weakly and gently to meet his lips, swooning at how precious it is that the boy is still enthusiastic despite his obvious fatigue.
Lifting his hand from where it's pressed to the floor, Brian caresses the creamy flesh of his brother's belly, feeling the muscles moving and twitching in time with the spasming thrusts into his mouth. He slides higher, the action leaving a streak of blood behind. Dex strains to look and whines so loud that the neighbors would hear if his house wasn't soundproof.
"Fuck! Fuck, 'm gonna- oh god- s-shit, Biney please, hah!" Dexter gasps, and it's the only warning he gets before his mouth is filled with cum.
Brian sucks him dry and pulls off, taking a moment to savor the salty taste that's so much more prominent with the large amount of fluid on his tongue. He rolls it around in his mouth like those food critics on TV, treating baby brother's cumshot like an expensive dish because every part of Dexter is a delicacy. He's still enjoying the gooey liquid as he gets up to help his brother to the bathroom and into the shower, only deciding to be done and swallow it down when he lathers up their hair with a second round of shampoo.
The both of them are sat on the tile, Dex being too tired to stand. They're surrounded by a puddle of watered-down blood that almost mirrors the shipping container except for the lack of dismembered mothers sharing the space. Brian sighs at the thought of how he'll have to bleach the whole bathroom in the morning. Dexter hums questioningly; the boy's eyes are closed but he can still feel their weight on him.
He sighs again before speaking. "Just lamenting all the cleanup I'll have to do later. Nothing to worry your pretty little head about."
"I'll help." Dex offers, cracking an eye open. He laughs and continues to massage the blood out of his brother's scalp.
"Yeah? You can barely stand. The only thing you'll be doing is going straight to bed." Baby brother pouts, looking every bit the petulant thirteen-year-old boy he's so good at pretending to be.
"Don't wanna sleep alone though." Is Dexter trying to kill him? God, the thought is tempting, but not a good idea when he's still got a raging boner. Doesn't the boy know what Brian could do to him when he's asleep and unable to defend himself?
...
Jesus, let's steer away from the horny thoughts before he actually loses his mind. If he does something unforgivable to Dex now, he might just end it all, unable to live with the brother-shaped gaping void in his life. Yes, just think about getting your brother squeaky clean and ready for bed and not his adorable sleeping form, not his slightly open mouth as he snores and drools over the pillows, definitely not how he sleeps on his stomach like the boy is presenting himself for Brian to take and take and-
CHRIST. Shut up!
Brian's dick is leaking now, just inches away from rubbing against Dexter's lower back, and wouldn't the freckled skin there look so much prettier with a healthy helping of white semen dripping down it? It would but god, Brian, he's on the verge of passing out. Dear boy doesn't need anymore exertion tonight. Just focus on getting him clean and asleep.
Well, everyone knows what they say about best-laid plans. Dexter relaxes back, leaning into his touch and pressing fully against the hard line of his cock. Oh fuck, feels so good; Brian can't help but rut forward as his eyes fall shut. Little brother gasps and tenses up.
"Brian," Dex breathes, "you haven't...?"
"Shit." He mutters. Peeling his eyelids open, he watches his brother turn in place to stare at him, resting a small shaky hand on his thigh.
Dexter takes a deep breath. "Do... do you want help?"
"You're tired." He says instead of answering, but little brother is too smart for his own good and keeps pressing the issue.
"That's not a no."
"It's not." Brian concedes.
"So let me help then." Dexter says with a smug look on his face.
"Dex-"
"I think you're only refusing 'cuz you're chicken."
Brian snaps. He seizes his brother by the jaw and snarls, rising up to his knees so he towers over the boy. "Chicken? Are you kidding me? What, four orgasms wasn't enough for you, gotta go for a fifth? Fucking greedy slut."
Dexter's mouth falls open, shocked and slightly afraid. He starts to tremble in the tight grip of his big brother, attempting to speak but only managing a series of gasps and aborted noises.
"You scared now, huh? Bit off more than you can chew? I should teach you a fuckin' lesson." Brian releases his brother's jaw and shoves him onto his back, relishing the thunk of his head hitting tile. The still-running shower sprays water in their faces so he reaches up to turn it off, not taking his eyes off Dexter for a second.
"B-Brian-" Dex starts, but he squeezes a hand over the boy's mouth before he can continue.
"Not a fucking word. You asked for this, so you're gonna fucking take it." He says it directly into his brother's ear, feeling the subtle heat of shuddering breaths across his knuckles. Dex nods frantically, eyes wide and completely focused on him.
Brian reaches down with his unoccupied hand, intending to get Dexter up again, but he finds little brother's cock already hard and leaking, a muffled whine escaping despite the press of his palm over the boy's mouth. God, what a fucking freak, getting off on being bullied and afraid.
"Well, look at this. You like it when I get rough and call you names, huh, slut?" Dex shivers, chest heaving and eyelids fluttering.
"I asked you a question." He spits, wrapping his hand around his brother's cock in a painfully tight grip. Dexter tears up and nods quickly.
"Now that wasn't so hard, was it? Good boy." Brian croons as he loosens his hold to gently stroke up and down the shaft. He removes the hand covering Dex's mouth, which immediately falls open to fill the bathroom with soft moans.
"Biney!" The boy cries when Brian strokes a certain way, thrusting his hips up to meet the fist around him. Brian shoves him back down hard enough to bruise.
"Did I say you could do that?" Dexter's eyes fly open, that fearful look returning.
"No. Sorry!"
"You fucking better be. God, Dex, I treat you nicely one time and you're already being greedy again." He takes his hand off his brother's cock and holds the slimy appendage up to the boy's mouth. "Here, why don't you lick it clean, slut?"
Dexter whines loudly, pulling himself to his elbows and sticking his tongue out to do just that. Brian watches intently as little brother goes over every inch of skin and looks to him for approval when he deems it clean.
He sighs and lazily inspects his work. "Ah, it's fine, I guess."
The boy is visibly disappointed at Brian's dismissal. "Let me try again."
"Don't fucking tell me what to do!" He shouts. Dexter recoils, whimpering when he surges forward and wraps the same hand around his throat, but despite his apparent fear, Brian sees that his brother's cock is still completely hard. What a precious little whore of a brother he's got.
"You just don't learn, do you?" He murmurs. "Maybe I should just choke you out so I won't have to deal with your bullshit while I'm getting off. I bet you'd like that, me pounding your unconscious body into the shower tile like a little fuck doll. Go to sleep a virgin and wake up a sore, defiled slut."
Dexter cries out, going completely tense under him, and-
"No fucking way. Did you just come from that? Wow, I don't think there's a single other person on the planet who could orgasm from being told a rape fantasy. You really are the lowest common denominator, baby brother."
With a hand still around his throat, Brian forces the fingers of his other into the boy's slack mouth, demanding for them to be sucked. His brother's eyelids flutter as he does it, rolling his tongue over each knuckle, the webbing in between, the pads of his fingertips. It seems to be going well, and Brian's just about to praise Dex when he feels the boy swallow.
"Surely I'm mistaken and you didn't just swallow a bunch of my lube, right? Or do you want it to hurt when I finger you open and fuck you? Fucking slut, I bet you would." He shoves Dex back down to the floor and tightens the grip around his brother's throat ever so slightly, not enough to bruise but just restrictive enough to hurt. Dexter moans around the fingers, continuing to suck on them until Brian rips them out.
When he reaches down this time, he completely bypasses the boy's rapidly hardening cock, rubbing a spit-soaked finger over his hole. Baby brother shudders at the touch, wincing when it presses in roughly. Brian thrusts it in and out, adding a second much sooner than he should just to hear Dex cry.
"B-b- Biney, please-" Dexter whimpers when a third finger plunges in, undoubtedly painful because the saliva is starting to dry. Wrapping both hands around the wrist of the hand pinning him down, little brother gazes into his eyes, trying to play the cute card so he'll let up and be gentle.
"Aw, poor thing. Does it hurt?" The boy nods, a flicker of hope passing through his eyes. Oh, what a silly kid. Brian narrows his eyes accusingly. "And whose fault is that?"
Dexter sputters. "Biney-"
"Whose fucking fault, whore?" Brian demands, not letting up even a tiny bit. Little brother gapes at him.
"I- it's my fault." He breathes eventually.
"What was that? Speak up." The three fingers inside his brother spread wide, making him squeal.
"It's my fault! Oh, please- hah!"
"And why is it your fault? C'mon, this is an easy one."
"Because-" Dexter gasps. "B-because I'm a slut."
"Indeed you are." Brian leans down to kiss his cheek tenderly. "At least you can admit it."
Removing his now almost dry fingers from the boy's hole, he hears a sigh of relief escape his brother's lips. Must've been hurting real bad if horndog Dexter is glad to be empty.
"You know, I think your honesty deserves a reward." Baby brother lights up, nodding vigorously.
"Please, Biney."
Brian grins, sharp and evil. "Here, you can get these nice and wet again so opening you up doesn't hurt anymore. How about that?"
And then he shoves the dirty fingers that were just inside Dexter right back into his mouth. The boy's eyes go saucer wide, unable to believe what big brother has just done. If he's anything like Brian, little brother is probably reeling from how unsanitary it all is.
But.
The sluttiness of his brother exceeds all expectation because despite that, his tongue goes straight to work getting them dripping and ready a second time. Dexter's panting when he releases the fingers from his vice-tight lips, eyes drooping slightly from the repeat exertion Brian's putting him through.
When the three fingers go back in, the slide is smooth unlike before and pleasurable enough for baby brother to start rocking into the press of them. Brian watches his brother's face scrunch up cutely as he spreads them, soft noises escaping his open mouth.
"Dex, you okay there?" He asks gently. The sudden change in demeanor startles his brother, and the kid blinks a few times and stares blankly at him. Brian raises his eyebrows which spurs Dexter into answering.
"Yeah. Like it, Biney. Feels good."
"I'm glad," he starts, nuzzling his brother's cheek with his nose, "because I'm gonna ruin you. Once I start, I'm not stopping, and little sluts don't get to beg for mercy when they're the ones who asked for it. Okay?"
"Yes! Please, Biney." Dex whines, and well, if that's not permission then Brian doesn't know what is.
He goes back to thrusting his fingers, pressing and rubbing in search of the boy's prostate. It takes a little while but he finds it, and his brother screams and clenches up so tight when all three digits roughly shove against the nub. Brian does it again and again, sometimes introducing the bite of nail, until Dexter is in tears and on the verge of his sixth orgasm. The kid is trembling and leaking all over his stomach, and god does he look so unbelievably sexy like this. One more bruising press of his fingers and little brother is coming again, sobbing uncontrollably and wetting himself with watery slick.
Dex's body goes limp beneath him once the high passes, arms falling to the floor beside his head. Even the sobs quiet, body too tired to cry. Brian pulls his fingers out for the final time, wiping them off on the boy's hip.
"Shit, you're a mess, aren't you?" Brian says, drawing squiggles in the mess on his brother's belly. "At least now you look the part of a dirty slut. Fucked out and covered in cum."
A tiny, pitiful noise draws his attention to Dexter's face, where his eyes are making a valiant attempt to open. Stubborn boy. He finally releases little brother's throat to hold him by the jaw instead, and exposing the skin there reveals a red hand mark that makes his inner darkness purr.
"You better not pass out on me now. Got one more job for that slutty mouth." Managing to crack an eye the smallest bit open, Dex looks at him with a heated gaze as he lets his lips part and tongue loll out. Oh man, this little boy is a complete and utter whore. Brian's going to absolutely destroy him.
He crawls up his brother's body so he's kneeling directly over the boy's face and pulls his head up with both hands. "You're gonna get me nice and wet for your hole, understand?"
"Yes." Dexter whispers. He starts leaning in to take it in his mouth like he did the fingers earlier but the sliver of pupil Brian can see flicks to his cock and little brother freezes. The other eye blinks open, the shock evident on his face.
"Big, isn't it?" Brian teases. "Can you believe this is going inside you soon?"
The boy shakes his head in disbelief. "I-it won't fit."
"Sure it will. I'll make it fit." He brings Dexter's head closer, close enough that he can feel soft breaths on his skin. "Now do your job and put that mouth to better use."
And by god does he. Baby brother doesn't swallow him down like he's fantasized - although he does try, the fucking cockslut - but Brian gets the pleasure of watching plush lips and pink tongue mindlessly suck and lick him all over. Dex's work is sloppy due to tiredness, but tracing droplets of saliva and precum as they drip down his chin is a fun little distraction from the ache of repeatedly delaying his own orgasm, not to mention the fact that the mess lends further to his brother's emerging image as a filthy, nasty, slutty boy.
Brian's being very good by not leveraging his grip on little brother's head and forcing himself down the boy's throat, instead thinking forward to the tight clench of Dexter's muscles and gentle squishing of organs as his cock temporarily relocates them. Considering the obscene slurping of Dexter's mouth, though, it's getting increasingly difficult to continue doing so.
Fuck it, he needs to be inside his brother, can't take this anymore.
He pulls the boy away, lowering him back down, and because he adored the thunk of skull on tile when he'd shoved Dex down initially, Brian lets his head drop the last couple inches to the floor. The second time is just as good and he revels in the fact that little brother doesn't even make a fuss, doing nothing more than breathing a sharp inhale and wincing at the burst of pain.
"You've been such a good boy, Dex." He says as he spreads his brother open, zeroing in on the pink hole and using a hand to line himself up with it. Brian feels the boy clench up at the barely-there kiss of his head, like the ghosting touch is enough to make Dexter try and suck him in. Oh, how cute.
Brian presses his cock against the puckered skin, massaging Dex's thigh when he remains tense.
"Dexter, relax." He orders. Little brother does, just enough for the head to slide in, and then he's whimpering and gasping - it won't fit, Biney, please-
But he said it would, so it will. And even if it doesn't, the tight heat around him is too perfect; he'd take advantage and force his way in as his brother thrashes and shoves weakly at his body, skin tearing and blood seeping out onto his cock as he shoves deeper and deeper into that now blood-wet heat, and Dex would be sobbing so prettily from the pain as big brother breaks him into pieces.
As it were, Brian simply restates his earlier words. "You asked for this, slut. Remember? No mercy when it's you who started it. So fucking take it."
Dexter sniffles and breathes shakily but relaxes again, enough to slide a little deeper and god, it feels even better around his shaft. The boy is miraculously hardening up yet again, an encouraging sight that motivates Brian to keep going, so he shoves in more and more until he's flush against his brother's body and Dex is whining with tears running down his face.
Intending to soothe his poor brother, Brian rubs a hand over the boy's stomach.
There's a bulge. Oh fuck.
Looking down, he can see the outline of his cock pressing up through Dexter's skin, and just in case he's seeing things, Brian moves while inside, the bulge moving with him. His brother whines again, mistaking his mini experiment for teasing.
"What a greedy little whore I've got here, huh? Can't settle for anything less than absolutely massive. Here, feel me inside you." And so he grabs one of Dex's limp hands and presses it to his belly. The boy moans so loud, cock twitching and fully hard.
"Oh, look at you. Must feel so good to be full. Such a fucking cockslut."
"Yes, oh!" Dexter gasps. "So full, love it!"
Seriously, how do humans cope with having a partner that's so compatible with themselves, because Brian's feverish and almost crazy with need. His baby brother is stuffed overfull with his cock and saying he loves it, surely that'd send anyone else into a frenzy, right? Christ, he's not going to be able to go easy on this wonderful boy. Brian pulls one of his brother's legs over his shoulder and grips it for leverage, slipping almost the whole way out and thrusting in hard. When Dex cries out, he does it again and again, listening to the perfect noises filling the room.
"Fuck, Dexter, doing so well for me. So hot and tight, could just keep doing this forever. You'd like that, wouldn't you, getting fucked over and over until your brain melts?"
"Yes! Please, do it, do it!"
"Greedy fucking slut."
He can feel Dexter clenching tighter the longer Brian fucks him, moans and whines being punched out with each thrust that scrapes the boy's back across the rough grout and uneven tile. His brother reaches a shaky arm up to brace against the wall behind him, the force of Brian's thrusts pushing his body backwards until that arm is the only thing preventing Dex's head from slamming into the wall.
"Oh god, Biney- s'good, s-so good!" Baby brother is beyond fucked out, slurring and drooling and just beautiful. He can't believe how lucky he is to finally have him, his precious little slut.
Brian wraps a hand over the smaller one of his brother that's pressed to his cum-soaked belly, shoving down roughly on an inward thrust and feeling the effect from both outside and inside Dexter's body. The bulge becomes more obvious, a truly mouth-watering sight when paired with little brother's cream-soft skin and precious face, but what's even better is the increased pressure around his cock, squeezing so so tight under the weight of their hands and the spasming of Dex's muscles as he screams. His voice sounds pained, like he's about to come for- Jesus, is this the seventh time? This kid's so spoiled; Brian's going to end up with an entitled, bratty slut for a little brother at this rate.
He keeps the pressure on, fucking into his baby brother harder, faster, rougher until the boy's struggling to breathe through the onslaught, only managing wet gasps and little grunts. Brian groans loudly when Dexter tightens up even more, struggling to keep a steady rhythm.
"Biney, so c-close, gonna- hff, oh shit!" Dex pants, face scrunching up as his body spasms again, squeezing impossibly tighter as he comes. As wrung out as he is, only a small amount of clear fluid seeps out across their connected hands but god, what a picture he makes.
Brian pauses mid-thrust to gaze down at the perfect little thing caught in the throes of orgasm beneath him. He could stare endlessly at his brother - his plush mouth wet with drool, the glob of big brother precum on his cheek, sweaty and wet bangs stuck to his forehead, boyish musculature trembling beneath milky white freckled skin, the gorgeous red and purple marks on his body, and of course his cute little dick and clenching boy-pink hole. All of it is so enthralling, especially the fact that this tiny teenaged killing machine has allowed Brian to have his way with him, and not only that, but enjoyed it.
He's snapped out of his reverie by the muscles holding his cock in a vice grip going completely lax and he flies into an almost-panic, checking his brother's breathing and pulse, which are both... fine.
Did he pass out?
It's to be expected after this much exertion, and the serene expression on Dexter's face is one he hasn't seen since before the shipping container when they shared a bedroom and he occasionally watched his toddler brother sleep. Brian looks for a while longer until his cock protests the lack of movement.
Well, now he's got to decide how to proceed. Does he keep going, fucking his unconscious baby brother? He probably shouldn't on account of the fact that Dex can't tell him whether or not he wants it, but fuck it's so tempting. Brian should just pull out and have a sad little whack off down the shower drain.
However.
The argument can be made that Dexter asked for it, right? He told him that he will take it and the boy enthusiastically agreed, so surely it's fine. Surely.
Maybe he just really wants to come inside his little brother and is making up excuses so he doesn't have to grapple with any potential guilty feelings. Is that so wrong? It might be, but that line was crossed when they dismembered a woman just across the hall. Ah, fuck it.
Brian alters his hold, taking Dex's body in a two-handed grip around the waist before starting to drill into the relaxed flesh of his brother. The boy sighs softly on each thrust, a stark change from the noisy slut of not five minutes ago yet still so adorable. He feels himself getting close - finally, finally - and fucks into Dexter harder, again scraping his back on the tile floor except now Brian can actually hear the sound of it, which he loves just as much as baby brother's head hitting a hard surface.
The abrasions on Dex's back must be deep because he notices a small trickle of blood slipping down the drain, and the sight of red makes him think of the body in his kill room, mom in the shipping container, him and Dexter drenched in red sticky metallic wet, fuck fuck fuck-
His hold on little brother's waist goes white-knuckled as he comes, groaning and panting with the force of it washing over him. Brian spills deep inside his brother, resting his head on the boy's shoulder as he catches his breath.
"Fuck..." he mutters, stunned at the intensity of his orgasm. He'd been with a few people since his release from the facility, but none of them even hold a candle to Dexter's magnificence. Brian smiles happily - they really were made for each other.