Derek despised and detested his dad, David.

David was a loud-mouthed, abusive drunk who made his family's lives hell. He was verbally and physically abusive to them all and Derek suspected he sexually abused Derek's sister. Daphne ran away from home when she was 15, two years ago and hadn't made contact since. Derek was now 13 and more than once while growing up he had heard his mother, Hortense, cry, not wanting to do something David was forcing on her.

Ten weeks ago Hortense died when she lost control of her car as she was fleeing the house after another abusive row with David. The row was something about a dog, Derek didn't understand, as they didn't own a dog and David never indicated he wanted a dog.

Then two weeks ago, David was canned from his labourer job when he took a swing at the boss. Since then he sat around their cheap rental house drinking constantly, bitching about how life was unfair, and demanding to know what Derek was going to do about paying the rent.

Derek delivered newspapers in the morning before school and flyers in the afternoon to earn money to pay for extracurricular activities at school, although lately he had been buying food for himself and his younger brother Danny, 8. If it weren't for Danny, Derek would follow Daphne's example and leave, never to return.

Derek despised and detested his dad.

One day Derek returned home to find Danny crying because David had hit him for making noise when the latter was trying to sleep. 'Passed out more likely,' thought Derek. This was the final straw. 'I'm going to have it out with him,' Derek said to himself.

Storming up to his dad's bedroom, he flung open the door and was struck by the smell. Stale alcohol, cigarettes, body odour and sweaty clothes. David was sprawled across the bed where he fell wearing only t-shirt and boxers. A number of empty beer cans littered the room.

Derek studied his father. Not bad looking, over 6', brown hair and eyes, good build although drink, and now inactivity, contributed to a thickening waistline, strong legs, and a bubble butt. Derek had not paid attention to his dad's ass before but now he was becoming sexually active he noticed things like that. Sexually active with a couple of over-the-clothing make out sessions with girls from school, if that could be called sexually active. Derek didn't call it that he called it frustrating.

But here he was staring at his dad's ass getting sexually aroused. Weird. But he kept staring. From the corner of his eye he glimpsed his father's belt. An evil little idea took hold of Derek's mind. This was the belt with which David beat the family, how about Derek using it on his dad?

Derek liked that evil little thought. He released the belt from the jeans and, as he had seen his father do so often, brought it down forcefully on that ass. There was no reaction from drunken David so Derek raised and lowered the belt several more times. This was actually turning him on. Derek reached over and forcefully ripped the boxers off his father. That bubble ass looked even better naked. And the belt left welts on the flesh.

Derek could not believe how turned on he was as he beat his dad's ass. So much so he had to release his cock from his jeans. In health class they learned the average length for cocks was 5 to 7 inches, Derek was just slightly longer than average. He was proud of his cock. He had gotten hardons in the showers after gym class a couple of times and chose not to hide it like some fellows did.

And now, here he was with a hard on while hitting his dad's ass. Derek moved between his dad's legs spreading those legs further apart. He caught a good look at his dad's balls and his asshole. With his hands he spread the ass cheeks to get an even better view. He heard about ass fucking and wondered what it would feel like to shove his cock in that asshole. He shuffled closer, pulling his father's ass closer to the edge of the bed.

Now Derek's hormones took over. He carefully positioned his cock head at the entrance to his dad's ass. And rammed it in full force. The ass was so tight and dry. The resistance Derek encountered felt great on his cock. He pushed through that resistance sinking ever deeper.

David grunted and groaned and tried to pull away, but drunk as he was his efforts were feeble at best. Derek rammed all the harder. David's reactions increased in volume and greater effort.

Derek began pounding in earnest, spreading his father's legs further apart so he could go deeper into that hot, tight ass. "Enjoying this, dad? Like being on the receiving end?" Derek slapped each ass cheek in turn.

David was becoming more aware and his groans were getting louder. "Ahhh!! Holy fuck, what's going on?" He turned to see his son, "Derek, what the fuck are you doing? You're ripping me apart. Get the fuck off me! Now!"

"Fuck you, dad! This what you did to mom, right? Fucking her when she didn't want to, right? Well, your turn to get fucked when you don't want it. Your ass is mine from now on."

David twisted violently momentarily knocking Derek off balance pulling the cock from his ass. Now on his back, David tried to lift himself but Derek regained the upper hand by lifting his father's legs higher into the air pushing his knees into his chest. He also lunged forward ramming his cock back into that inviting ass.

David roared, "Christ Almighty! Argh! Stop, Derek, stop. Please stop. Please, you're shredding my ass. Please, don't."

Derek continued heedless of his father's pleas. He reached between his dad's legs and took hold of the older man's balls. He gave a good strong tug while squeezing tightly. David roared in agony again. "You like being abused, dad? You have hurt us for the last time. You are never going to hurt Danny again, you old bastard. Do you understand?"

David tried to evade answering but another sharp tug and squeeze on his tender balls prompted him, "Fucking Christ! Stop! Okay, okay, I won't do anything anymore."

Derek stared down at his quivering father, "Dad, why do you have a hard on?"

"What? Hard on?"

Derek pulled the cock up, "This cock. This hard on. My god! Being raped turns you on, doesn't it?"

"No, no, no it doesn't." David blushed at the truth of what his son was saying.

"Yes, it does, you are enjoying this. You like having cock up your ass. You like having my cock up your ass. Fucking you." Derek smirked, "And because of that, things around here are going to change. You are going to get off your ass and pull your weight. You are going to bring in money to support Danny and me like you should."

"Okay, agreed. Please stop now, please."

"I have an idea, dear old dad of mine. I just thought of how you can bring in some money. Can you guess how?"

David was genuinely confused, "No, I can't."

"We're going to make use of this new talent of yours. I'm going to sell this ass. On the street, no, on the internet. Going to invite men in to fuck this ass for money. Maybe the street too. You walking the streets trolling for guys to fuck your sorry ass."

"What? No, fucking way." Another squeeze, "Ahhh, okay, stop, please stop."

Derek was thoroughly enjoying these new evil thoughts and the mental images that accompanied these thoughts: his dad getting screwed by numerous men, maybe getting ganged banged. He smiled down at David, "Oh, yes, you are finally going to do something for us and give us the life we deserve. And if it humiliates you all the better. All those years of abuse means you deserve to do this for us."

Before David could response a noise interrupted them.

Both men turned to the doorway. There stood 8-year-old Danny mouth agog.

Derek recovered first, triggered by the sight of Danny's red eyes from his crying, "Danny, come here." He hugged his little brother close, "Danny, dad and I have come to an agreement. He is not going to hit either of us ever again. He is not going to make you cry ever again, won't that be good?" The youngster nodded, his eye fixed on his brother's cock and where it was connected to their dad. Derek resumed fucking David. "Would you like to help me here?"

David reacted, "Derek, what are you thinking of? Don't do it. He's 7."

"Actually, dad, he's 8. And that gives me a great idea. Danny, grab my camera from my bedside table and bring it here." Danny ran to do his brother's bidding.

"No, Derek, don't. You can't."

"Oh, but I can and I will. Thanks, buddy." Looking at Danny, Derek softly said, "Buddy, I want you to take off all your clothes and climb up on the bed." Danny hesitated but was encouraged by Derek's smile and him saying, "Remember once we do this he will never hit us again. Ever."

In an instant, Danny was naked and on the bed. David struggled fruitlessly against the physical force his eldest son applied, while his youngest followed Derek's directions and knelt next to his father's head.

"Stick your cock, your thing, in his mouth."

David firmly closed his mouth and shook his head. Derek reached in and pinched David's nostrils closed. He had to open his mouth to breathe and Danny quickly stuck his little, hairless 2.5" cock into David's orifice. As soon as he did Derek began snapping pictures making sure he captured their father's face in the shots.

After a number of pictures, Derek handed Danny the memory chip, "Danny, hide this in your very secret place, okay?" Danny disappeared.

David fully understood the implications of what had just happened. "Okay, you got me. What happens now?"

"Well, Dad, tonight you are going to make Danny and me feel real good. You are going to wait on us hand and foot, naked, and you are going to lick us and suck us and get fucked by us to our hearts content. Oh, and I'm going to give Danny a chance to belt your ass like you hit him."

"Really? Yah!" Danny had returned and relished the idea of revenge on David as much as Derek did.

Derek withdrew his cock and presented it to David who understood his new role in the family very well. He began cleaning his son's cock anticipating what the rest of the night might bring.