Watching his morn getting fucked had given Jody a throbbing hard-on. Joy was getting just as excited, wondering how it would feel to have a big hard prick fucking in and put of her own hot little snatch. Being a virgin, the youngster had no idea how fucking would feel, but judging from her mom's squeals of joy and the ecstasy on her face, she decided it sure had to boa lot of fun.

Writhing beneath her husband, Susan was losing all sense of reality.

"Yes! Yes!" she squealed with unbridled joy. "Fuck it to me, baby! Oooh yessss! Fuck me harder!"

"Do you mean it?" he panted as he lustily pounded his thick cock into her.

"Yes! Yes!" she cried hysterically. "Fuck me harder! More! More! Harder!"

The twins were surprised when they saw the juices suddenly flooding out around the length of their dad's plunging prick.

"Oooooooh, SHIT!" they heard their morn screeching. "I'm coming! Aaaahhhh!"

Dave continued fucking into her until his wife had ridden her orgasm to completion. Then, giving his cock a few quick, hard strokes, he began pumping her cunt full of his thick hot cum. Jody had jacked off enough times to know his dad was shooting his wad into her twat. Standing excitedly by the door the boy wished he were shooting his jizz into a girl's hot fuckhole.

"Look," whispered Joy when her father pulled his limp wet prick out of her mother's cum-filled pussy. "His thing has shrunk."

"Cocks always get little after they shoot off," Jody explained to his sister.

"How do you know?"

"Because my prick always shrinks after I jack off," he said.

"What's jacking off?"

"That's when a guy pumps his hand up and down on his pecker till he shoots off," the little boy explained.

"Why do you do it?"

"Because it feels good."

"Can I do it to you?"

"Do you really mean it?" he excitedly asked.

"Sure," grinned his sister. "It sounds like fun. I've never touched a prick."