Vincent was fixated on his mom's ass as her pussy gripped his cock and she humped back into him. She was very receptive; with every move of her son's hips Jillian humped back, moaning and urging him on.
"Fuck me harder! Push that long cock all the way up into your mother's cunt!" Jillian demanded. Vincent did oblige, using his mother's hips to slam as far into her as humanly possible. Every time he bottomed out, he was rewarded by his mother's moaning and the command that he slam into her again.
"Yes, like that. Harder, Vinny. Oh God, I need it. Fuck me hard."
Jonah had discarded the lounge shorts, and was wanking his cock as his mother incestuously begged for his brother's cock. It amazed him that Vincent never hesitated, and seemed to be aroused by their mother's begging.
"Is this hard enough?" Vincent taunted. He pumped into her viciously, continually, mercilessly shooting in and out of his mother's cunt as if he were a machine.
"No, it's not fucking hard enough. Are you a motherfucker or not? Fu- Aah!" Jillian trailed off as Vincent yanked her head back by the hair with one hand, and continued to use the other to slam their pelvises together, his prick impaling Jillian even harder, until she began moaning at a constant rate.
"Uh... yeah.. like that. Fuck me like that," Jillian squealed. "Ooh.."
Jonah heard exclamations from Stephanie and their father in the next room. Curious, he paused the insistent wanking of his cock and heard only the suction of his mother's cunt on Vincent's prick. Jonah walked out into the hallway, holding his cock out in front of him.
Stopping by his sister's door, for a few moments all he could hear was panting. Then, a small exasperated sound coming from his sister.
"Do you want to clean Daddy's cock?" his father asked.
There was a pause.
"Careful, though. I'm still very sensitive." There was a small slurping, and Jonah carefully peeked through the ajar door, looking for his sister.
Stephanie was bent down over Rob's cock, and Rob was stroking her head, softly. He had a look of contentment on his face. Jonah shrunk back from the room in jealousy.
His cock throbbed angrily at him, but he ignored it and went back to the homework he had planned. He was, after all, banned from his sister's pussy.
...
Jillian was showering at 6:30 that evening, and thinking that perhaps she would order dinner. She hadn't had the time for it; since her daughter had practically sprung at her husband's cock earlier in the day. Jillian's brother Matt had been right: parent-child sex was simply nothing like sibling sex at all.
Jillian had planned a slower introduction of her family members to the idea of incest, but the actual progression of things this evening hadn't displeased her at all. In fact, perhaps it was better. Her children had all been so driven by lust for one another that surely the pleasure of that first day would remain in their minds.
Jillian had, in fact, been in an incestuous relationship with her own brother since they had been teenagers. Matt had seduced his own daughter over a year ago, and since Jillian had heard about it, she had been thinking of how she could possibly manage to create her own household of sex-driven fun.
The beauty of Matt's situation, of course, was the absence of his wife. Being divorced, he only had one party to convince. Jillian had thought that the hardest party to convince would be her own daughter, but apparently she had quite misjudged Stephanie.
To the end of eventually having a rather sex profligate household, Jillian had procured two prescriptions of birth control from two different clinics and had been grinding pills into her daughter's sugary soft drinks for three months now.
Emerging from the shower, Jillian tousled her hair dry. She left her bedroom in only a towel. Walking down the hall, she peeked in on Stephanie and Rob.
Rob had an arm drawn around Stephanie's waist, and the both of them seemed to be sleeping deeply. This was the first time Jillian had seen her daughter sleeping in a while, but this also might have been the first time her door had been left open in months. Rob was practically smiling in his sleep, and their daughter's face was completely smooth, flawless.
Jillian smiled to herself and backed out of the room, going toward her sons' room.
Vincent was completely passed out on his own bed, and Jonah was staring with amazing rage at a math book in his lap. Jillian went over to his bed and sat down next to him; Jonah sidled away from her slightly.
"So, do you still want your sister for your birthday?"
...
When Stephanie awoke, her mother was standing over her with a pill dial in one hand and a glass of water in the other.
Stephanie couldn't move. Not only did it seem like her legs had no strength in them, but her father's arm had effectively pinned her to his side.
"I have a pill for you. Think you can swallow it?" Jillian asked.
Stephanie nodded, and carefully swallowed the pill as her mother dribbled a little bit of the water into her mouth.
"What was it?" Stephanie asked.
"Birth control."
"But I thought Dad had a vasectomy?"
"You know your brother, Stephanie. He can't stand seeing someone else have fun, but he wants it too," Jillian smiled wickedly. "Besides, you've been on the pill for months now."
Stephanie had never paid much attention to the timing of her periods, having no fear of pregnancy. It wasn't surprising that she hadn't noticed a change. She did, however feel betrayed that her mother had not only drugged her, but planned to give her to both men without any discussion with her.
"But I don't want--"
"It does not matter what you want. You're living under my roof. For free. I'm paying for your books, your clothes, your food. You are not earning your keep. Understood?"
"Yes'm," Stephanie mumbled, pushing her head into the mattress.
"And if you don't want to get pregnant, then you'll take these pills. Now, about Jonah..."
"Jonah?"
"Yes dear, he quite enjoyed watching you! I was surprised, myself, but it's not so strange." All of the blood seemed to drain out of Stephanie's face.
"Well, I made him promise to wait until his birthday; we're going to have a little party in honor of him joining us. I wouldn't be surprised if Vincent jumped you first thing in the morning, though, so be prepared."
