Work Text:
Sammy’s bored. His mom is gone for the weekend, and his brother won’t play with him. He begs and begs and begs but Mike doesn’t care. Just stays in his room all day, glaring at Sammy whenever he dares to interrupt him.
It’s so boring.
So, naturally, he eventually decides that he’ll run the risk of getting his brother’s wrath if it means he won’t be so bored anymore.
When he opens Mikey’s bedroom door, Sammy blinks.
His older brother is sitting in his gaming chair, a jar of peanut butter sitting on his computer stand. He’s completely naked, and his peen is slathered in a generous amount of peanut butter.
Their golden retriever, Murphy, sits between his open legs, lapping at Mike’s peen. His brother is whining as if he’s being hurt, but he doesn’t move to stop Murphy, only rests a hand on his furry head, as if encouraging him.
Sammy doesn’t know what to make of it. He almost turns and walks away, but he doesn’t. He’s curious.
“What are you doing?”
Mike looks up at him, apparently unsurprised by his arrival, which surprises Sammy, because Mike always gets mad when he walks in on him naked.
Murphy’s long tongue slurps at Mike’s peen, and his eyes flutter shut for a moment before he responds.
”What’s it look like, idiot?”
Sammy shrugs, kicking his feet together awkwardly.
”I dunno.”
Mikey rolls his eyes, and glares at Sammy like he’s the stupidest thing he’s ever laid eyes on.
”I’m getting a fucking blowjob.”
Sammy tilts his head in confusion.
”What’s that?”
Murphy’s tongue runs right over the tip of Mike’s red peen, and his brother lets out a loud shout, making Sammy flinch.
”It means Murphy’s gonna lick my cock like a good boy until I cum on his face.”
Okay, truthfully, Sammy doesn’t know half of those words. But that just makes him even more curious. He’s never seen anything like this before. It’s exciting.
”Can I watch?”
His brother stares at him very intensely for a few long moments before he seems to come to a decision, his lips quirking up in a smirk.
“Well, if you’re gonna stay,” Mike breaks off mid sentence in a high moan, “You gotta play the game.”
”What game?”
”I’ll show you after. But if you stay, you have to play, got it? Or I’ll call and tell Mom that you’re not playing by the rules, and you’ll be in big trouble.”
Sammy’s eyes widen, and he shakes his head vehemently, suddenly panicked.
”No, I’ll play! I promise I’ll play!”
”Then you can stay.”
Sammy grins, and plops down on the bed across from the two of them, watching in fascination.
Mikey’s head is thrown back against the chair, and he’s making these little uhn noises every time Murphy’s tongue goes another stroke.
“Oh my god, good boy, good boy, good boy-“ the words seem to tumble from his lips, and then Mike’s face scrunches up, his eyes roll back, and he groans loudly.
A splash of white comes out of his peen and hits Murphy right in the face, spilling over his eyes, nose, and ears.
His brother pants heavily, almost like a dog, and Sammy doesn’t know what just happened but he does know that his own peen is starting to ache in his shorts.
”What’s that white stuff?”
It takes a minute for Mikey to catch his breath.
“That’s called cumming. It’s what happens when you feel really, really good.”
Sammy gasps, almost jumping up from the bed in his enthusiasm.
”I wanna cum! Please, please, please can I cum?”
Mike chuckles, and there’s something dark in it that Sammy’s wary of. It’s the kind of voice he uses when he’s playing a trick.
”Sure. But only if you play the game, remember?”
Sammy nods. Even if this is a trick, he doesn’t have a choice but to go through with it. He doesn’t want Mike to call Mom.
”Okay! How do I play?”
His brother smiles.
”Just do what I say. Take off your shorts and undies.”
Sammy does so without hesitation. He’s naked in front of Mikey all the time. No big deal.
“Get on the floor, on your hands and knees. Like you do when you play puppy dog.”
He does so readily, hardly containing his excitement. He wonders if Murphy will lick his peen, too. That looked like fun.
Both Murphy and his brother disappear from sight, and it’s a minute or two later that he suddenly feels something cold and wet go up his behind.
He yelps, instinctively pulling away from the burning sensation, but two big hands grip his waist, and he can’t move.
”Wha - Mikey what are you doing!”
”We’re playing the game. Did you change your mind? Do you want me to call mom?”
Sammy shakes his head, and tries not to whimper when the intrusion becomes bigger.
”No, no! I can do it.”
It gets bigger again, and this time he can’t contain his cry. He comes to the realization that it’s Mikey’s fingers in his butt.
He’s not sure what kind of game this is, but he’s positive he’s never seen anyone play it before.
Mikey’s fingers thrust in and out of him brutally, but eventually the burning subsides, and it actually feels kind of… good.
”Murph! Come here, boy.”
Sammy blinks, taking a few seconds to register Mikey’s words before a cold snout is pressed against his butthole.
He jumps, and Mikey laughs meanly.
”C’mon, Sammy. Don’t be a pussy. Murphy wants to play, too.”
Sammy smiles. Maybe he’ll finally get a “blowjob” like Mike did!
But in the span of only a couple of moments, a heavy, furry weight slams into his back, and there’s something huge slamming into his butthole.
Sammy screams, thrashing, but Murphy’s front legs are wrapped tightly around his abdomen, holding him firmly in place.
The dog’s peen is inside of him! He squeezes his eyes shut tight against the pain, but when he finally dares to open them, he sees Mikey directly in front of him, a wide smile on his face as he rubs his peen with one hand, his cell phone in the other.
Sammy feels floaty, dazed and in pain and so full, and he can’t remember what’s going on but his own tiny peeny is stiff and oh god, it hurts so good.
“Mur-Murphy’s in my tummy,” he slurs, and his brother nods, reaching over to poke at the bulge in his belly, making Sammy whimper.
”Yeah, that’s right. His fat doggie dick is rearranging your guts. You like that, you faggot?”
Murphy’s peen rubs over something inside of him, and he wails, tears spilling down his cheeks.
”Y-yes! Feels - unh, feels so good, Bubba!”
“God, this is so hot.” Mike pushes the phone in his red, messy face, before panning around him.
A foreign heat is building up in Sammy’s tummy, and he doesn’t understand it, but it feels like his peen is gonna burst.
”Mikey, Mikey I have to pee!”
“Do it, you fucking whore. Cum on his dick like a good boy.”
Sammy’s body seizes up, legs spasming under Murphy’s weight as something bright and hot consumes him. When he comes back down to earth, it’s to the sound of his own cries, and the pain in his behind has increased tenfold.
”It - It hurts! Bubba, make him stop!”
”Shut up! The game’s not over until he’s got his knot up your ass, do you understand?”
Sammy can’t get words to come out past the sobs, but he manages a small nod, hoping to keep his brother from getting too angry.
A sharp slap suddenly strikes his face, and he cries out at the additional pain.
”I asked you a fucking question!”
”Yes! Yes, I understand!”
He lets his weight fall limply against the ground, all efforts to free himself from under Murphy futile. The dog seems to like this act of submission, his hot breath ghosting over the back of Sammy’s neck as he pants.
It hurts more than anything, and it feels like hours, days of waiting, and Sammy still doesn’t know what the heck a knot is, anyway, but he wishes that Murphy would just get it over with.
It’s a wish that Sammy would come to regret, as something hard and as big around as one of Murphy’s tennis balls started poking against his butt hole.
Sammy’s eyes widened as it started to catch against his rim, and when it finally popped in, a burst of white hot pain lit up behind his eyes before he passed out.
