#frobbycest

Dennis's dad has always tried to make sure he spends an equal amount of special time with his boys. He says he doesn't want to play favorites, so whenever he has special time with Frank, the next day he'll have special time with Dennis, and so on.

Not playing favorites is also why his dad always makes his boys wear condoms. Sadly, only one of them can get him pregnant first and he doesn't want either of them to feel left out. Soon, though, they won't have to worry about condoms because, at his dad's age, neither of them will be able to get him pregnant much longer.

Despite the fairness of it all, Dennis has always hated when his dad had special time with his older brother. He hates thinking about anyone being inside his dad's hole except him, but it's impossible not to think about when he can always hear his dad moaning down the hall because of his stupid big brother's stupid big cock. The only thing that makes it easier is that his dad always makes sure to snuggle and kiss Dennis the next day even if they don't have special time, which means he never feels too bad for too long.

So Dennis knows it's very unusual when he hasn't gotten any special time with his dad for over a week.

His dad says it's just because their work days have been busy at conflicting times and then they're too tired when they get home.

Dennis tries to believe him, and maybe he would, if his brother hadn't gotten special time with his dad at least 3 times this week already, and maybe even more times that Dennis doesn't know about.

When Dennis tells his dad it's not fair, he just keeps reassuring Dennis that his and Frank's schedules at work have just matched up better. He says it's just a coincidence that they just so happen to always have free time at the same time.

Dennis tells him he needs to stop having special time with Frank then to make sure he keeps things fair, but his dad just pats his shoulder and tells him not to worry about it. He's sure their schedules will line up and they'll have special time soon.

But Dennis sees how his dad and brother look at each other. Like they're each other's whole worlds. His dad used to look at him like that too, but recently it's like he's been trying to keep him at a distance on purpose. He used to touch Dennis all the time too, even at work, but all of a sudden he just… stopped.

Dennis suspects it's because of the last time they really had special time together. He had been fucking into his dad so fast and hard he was seeing stars and his dad was draped around his shoulders, moaning into his ear.

"Fuck, baby, don't stop," his dad had panted. "So good, so fucking good." 

Dennis was so overwhelmed he wasn't thinking straight.

That's the only excuse he has for what he said next.

"Fuck, Dad," Dennis had moaned while he pistoned into his dad's hole. "Wanna fuck my come inside you. Wanna get you pregnant."

Dennis knew better. He really did. But his dad's hole felt so good around him that he couldn't have stopped the words that came out of him even if he tried.

He thought his dad would be mad, maybe even stop their special time, but his dad had only moaned louder while his hole clenched around him.

So, Dennis continued.

"Gonna fuck a baby inside you, Dad." Dennis had grunted and thrust faster. "Gonna rip this stupid condom off and knock you up."

His dad had suddenly stopped moving then, but Dennis didn't notice because at the same moment his orgasm slammed through his body and he spilled inside the stupid condom he was wearing. It was only after, when he thought about it, that he realized anything was wrong. 

In the days that followed, his dad had started pulling away from him. Fewer smiles, fewer looks, fewer touches. Nowadays, Dennis feels like his dad barely even looks at him, not even the rare times when he lets Dennis inside him.

So he starts to think that maybe his dad doesn't want to have special time with him anymore. Except, when he told his dad this, he just looked hurt and said of course he does. When Dennis tried to ask if he was mad about what he said, his dad said they didn't need to talk about that because everything was fine.

Then, the next day, his dad had special time with Frank again.

So despite his dad's flimsy reassurances, Dennis's suspicions just continue rising, and his patience starts wearing thin.

On their very next shift at work, Dennis sees his dad pulling his brother into a room, both smiling like fools. Dennis is livid. He wants to go over there, ask them what the fuck they think they're doing, but he's wheeling back a new patient and has to finish up first. By the time he can get over there, his brother is already tying off his condom and his dad is a fucked out, apologizing mess.

Dennis seethes and leaves in a huff.

He's grateful, at least, that Frank still used a condom. He's not sure what he would've done if he found out his stupid brother got to put his cock into his dad's hole with nothing in between them. But condom or not, his dad still chose his brother over him again. He couldn't even wait 5 minutes until Dennis was done with a patient. He just had to get his hole filled, and he even didn't care or think about the fact that Dennis might need to have his cock surrounded too.

He stews all shift, barely looking at his dad or brother, even on their cases together. His dad keeps looking at him, but doesn't say anything. Even his stupid brother seems to sense the tension between the three of them, but they all just ignore each other and work in silence as much as possible.

When they finally get home, Dennis has spent all day figuring out what he wants to do about this. He still doesn't say a word to his brother or dad when they get in the door, just goes straight to the kitchen. Thankfully, their family has never been one for pushing communication, so his dad and brother just head upstairs, leaving Dennis to enact his plan in peace.

Dennis listens until he hears both of their doors close upstairs (sleeping separately, he notes with satisfaction) then takes the sleeping aids he'd grabbed from the OTC cart from his pocket. He brews some strongly flavored tea, then he empties the gel capsules into the steaming mug and stirs in a bunch of honey to help hide the taste.

His dad is surprised when he comes into his room to deliver him tea. He looks so handsome sitting up against his headboard — shirtless, with his reading glasses on — that Dennis almost backs out of his plan. Except then his dad avoids looking at him as he walks up to his bed, and then he accepts his tea without so much as a "thank you," and Dennis's resolve strengthens.

Half an hour later, Dennis sneaks down the hall to his dad's room. He listens carefully outside the door, then opens it when he hears his dad's faint snoring.

As Dennis walks up to the bed, he glares down at his dad sleeping peacefully. It wasn't fair that his dad should get to sleep so soundly when Dennis felt like this, but Dennis needed him to be really, truly asleep. Normally, he loved the way his dad manhandled him in bed — casually lifting and tossing him around like he didn't weigh a thing — but that also meant there was no way Dennis could do what he was about to do while his dad was awake.

Dennis tugs off his pajamas then pulls back his dad's covers, and is surprised to find his dad is naked.

Maybe he'd planned on letting Dennis have special time with him tonight? Maybe that was why he was surprised Dennis stopped by his room?

A pang of guilt washes over Dennis, but then he shakes his head. It still doesn't matter, he decides. It's not just about today. His dad keeps choosing Frank over him, when they've already had so much time together and Dennis has had none. 

Tonight would just have been a pity fuck. Something just to placate him and shut him up, and Dennis deserves more than that. He deserves an explantion for why his dad is treating him like this. He deserves to have his dad look at him with his soft, loving eyes again. He deserves just as much as everything his stupid big brother gets — no, actually, he deserves even more. His brother has proven he doesn't care at all about Dennis, so why should Dennis care about him? Frank deserves to have nothing, just like Dennis has gotten, and Dennis deserves everything.

Dennis is going to make sure his dad knows that. He wants — no, he needs his dad to know that he should be his and only his.

And he will.

Dennis glances towards the door with a smirk. If Frank went to his room because he thought his dad would be fucking Dennis, then there's no need for him to be quiet about this either.

Dennis climbs over his dad's familiar shape in the darkness, letting his half-hard cock drag over his dad's thighs. It feels so good having the bare skin of his cock against his dad's skin that he nearly comes right then, but he stops himself. He can't get this over with too quickly. It's been so long since he's gotten to touch his dad. He wants to savor this.

He leans down to mouth against his dad's unmoving lips, even holding his jaw open to slip his tongue inside.

Dennis moans. His dad's mouth is so soft and pliant for him, just like his dad apparently wanted him to be. Soft, and quiet, and never talking back. Never saying what he wanted. Just giving his dad what he needed when he needed it. Never having needs of his own.

His dad hums softly in his sleep and Dennis's chest suddenly aches. He misses his dad so much, even though he's right here in front of him. Tears prick at Dennis's eyes. He just wishes his dad would look at him — would see him — the way he seems to always see his stupid brother. He deserves to have those same looks and that same connection that comes so easily between them.

Which is why tonight, Dennis is making sure his dad will be more connected to him than his brother ever will be. Forever. 

Dennis reaches down to fist his cock in fast, firm strokes. He licks the fingers of his other hand then slips them down between his dad's thighs and circles his hole.

Normally he'd grab his dad's lube from the nightstand and really get him ready for him, but if his dad can't be bothered to pay attention to his needs then Dennis isn't going to be bothered with his.

A part of Dennis even wants him to be sore for days after this too. So sore that Frank can't even touch him, even if he wanted to.

He liked the idea that his brother wouldn't be able to put his stupid dick anywhere near his dad.

Or near Dennis and his dad's baby.

The thought of his brother being denied while his dad carries a part of Dennis inside him makes Dennis's cock jump. He knows he has to fuck his dad soon, or he'll come before he even gets inside him. 

Dennis licks his lips, lines himself up, and pushes inside all at once, groaning loudly when his bare cock breaches his dad's hole for the first time. His dad's wetness and heat pressing around his cock is almost unbearable. Dennis holds still for a moment, trying to adjust to all the overwhelming feelings. He has to make this last. He has to savor it. 

Once he feels like he has a handle on his orgasm, Dennis begins to fuck into his dad with fast and eager thrusts — not caring at all how his dad's hole might be feeling. It's freeing and intoxicating, being able to use his dad's body for his pleasure like this. Just like his dad has always used his body for his pleasure, without a care in the world.

As this rush of intoxicating freedom flows through him, Dennis slaps his dad's face and feels a wicked twist in his chest.

"You feel that, Dad?" Dennis smacks his cheek again as his thrusts speed up. "Gonna be real sore tomorrow." He smiles as he considers this. "But maybe I'll just make you some more tea?"

The thought of coming inside his dad's sore hole again has Dennis biting his lip. He braces himself with one hand on his dad's chest and then, on a whim, wraps the other around his dad's throat.

"Maybe I'll do this every night," Dennis pants. Just the thought of getting to do this again makes his cock swell larger. "Fuck. Gotta make sure you're mine, Dad. Gotta make sure I get you pregnant."

Dennis squeezes hard against his dad's carotids until his breathing hitches. For a half second, he debates squeezing harder, keeping his dad choked and craving something only Dennis can give him. 

But what Dennis really wants is something else only he can give his dad: their baby. 

Reluctantly, he eases up until his dad's breathing returns to normal, then he starts squeezing and releasing again as he huffs and pants over his dad.

"I won't let Frank fuck you when you're pregnant, Dad," Dennis promises, "Won't let him get his stupid come near our baby."

Dennis bites his lip as he slows down his thrusts. The thought Frank being denied his dad's hole for 9 whole months is almost enough to make him come, but he doesn't want this to be over yet.

He minds drifts to Frank down the hall, alone in his room while Dennis gets to his dad all to himself. 

Dennis thinks about all the times he's had to listen to Frank fuck his dad, then smiles.

Dennis clears his throat, then moans loudly. "Oh fuck, Daddy!" he shouts, "Your hole's so fucking good!"

Dennis smiles down at his dad's relaxed face. He continues moaning loudly for his brother's benefit, but lowers his voice between his moans so he can tell his dad all about his plans for him.

"Maybe once you have our baby, I'll just get you pregnant again." Dennis squeezes his dad's throat tighter. "Frank won't get to fuck you ever again. You'll be too full of your grandkids."

Dennis moans loudly again as his hips steadily smack against his dad's thighs. He feels his balls draw up, and moans again. 

"Maybe our baby will have a hole I can fill too," Dennis muses. He brushes a hand over his dad's stomach, imagining their baby in there. "Maybe I'll get you both pregnant."

Even though his dad is the one losing oxygen from the hand around his throat, Dennis is the one who starts feeling light headed. Giddy, even.

"Or maybe our baby will have a cock and we can both get you pregnant." Dennis thrusts faster as he clenches around his dad's throat. "Yeah, your son and our baby, both filling you up. Making you ours."

His pace is erratic now, rhythm faltering as his need overtakes him.

"Or maybe I'll just put another kid inside you tomorrow, huh?" Dennis pants deliriously. The impossibility of that is a far away thought. All he can see is his need. "I'll just give you another one and another one, every day. Until you're bulging."

Dennis squeezes his dad's stomach with both hands, imagining it huge and round from pumping so much of himself inside.

"Frank won't even be able to find your hole." Dennis's breath hitches as he laughs. His hips are a blur now, slapping painfully hard against his dad's skin. "You're just gonna be too full, Dad. Too full of me."

Fuck. So close, so close…

Dennis's mouth opens wide as he thrusts once, twice, and then shouts as he slams hard inside his dad, shooting up into his hole as far as he can. He shudders as he drives his cock up into him a few more times, trying to shove his come as far up into his dad as he can. 

He collapses onto his dad's chest, breathing hard as he continues rutting his hips in needy little motions inside him.

Dennis wants to keep his cock inside him as long as possible, lying to himself that the longer he stays inside, the better chance he has of getting him pregnant. But all too soon the stickiness between their bodies is begins cooling and growing more uncomfortable.

Dennis pulls out of his dad with a sigh. He stares down as his sleeping face, then suddenly remembers one of his dad's favorite things to do to him. 

Dennis smiles, then smacks his dad's cheek with the back of his hand. 

"Open up, Dad."

He pulls his dad's jaw down and shoves his come-coated cock inside, fucking slow against his dad's placid tongue.

"Yeah, that's it," he says, repeating his dad's words back to him. "Clean me nice and good." 

He's spent more than a few hours under his dad's hips, sucking and licking his hole clean. It was only fair his dad do the same.

"Think I can come again, Dad?" Dennis asks. His softening cock gives a meager twitch at the thought and his dad hums in his sleep. "Yeah, Dad? You wanna choke on my come?" Dennis reaches down and fists his cock, leaving just his tip inside his dad's mouth as he works his shaft. "Or should I save my come for your hole?"

He reaches back behind himself and slips his fingers inside his dad's soaking hole, gathering and shoving all his come back inside of him as he thrusts his flaccid cock against his dad's tongue.

When it's clear his cock isn't up for another round, Dennis pulls out of his dad's mouth with resigned sigh.

"Okay, fine." He leans down and presses a wet kiss to his dad's mouth. He slips his tongue inside for a moment to taste himself on his dad's tongue and groans. "I guess we'll just try again tomorrow, Dad." ___________