"Oooh, you have a nice cock, honey!" she cooed, stroking it. "It's beautiful, Bill! And you're so hard! I bet you can't wait to fuck me, can you?"

He shook his head vigorously, gulping as he stared at her pussy.

Understanding his emotions, Tracy pressed him onto his back, leaning over him. She licked and kissed his chest, swirling her wet tongue about his tiny nipples, biting them tenderly. All the time, she kept a tight clutch on his pulsating cock, jerking her fist up and down.

"Shove your hand under my dress and feel me up, honey! Play with my cunt, too!"

"Mother might catch…"

"Hush," Tracy said, "Don't worry about mother. Play with my pussy and we'll have fun. You want to fuck me, don't you?"

"Gosh, yes!"

"Then hush arid do whatever you want with me," she said, sliding her hand to his balls.

She gave them a squeeze, then looked at him. Bill was totally devoid of hair on his cock and balls. But his prick stood up in hardness, his prickhead swollen, and he was dripping from his piss-hole. The fact that her brother was sent shivering excitement through her body, making her cunt contract as he rubbed his palm about it. For the first time, Tracy fully understood her mother's desire for teens.

"Do it now, Tracy!" he begged. "Do it like you said!"

Tracy giggled lewdly. "You've got to say it, Bill. Say fuck me, Tracy! Fuck me with your cunt."

"Fuck me, Tracy!" Bill almost shouted. "Fuck me with your cunt!"

"Oooh, I will!" Tracy gurgled, getting to her knees and lifting her skirt to her waist. "I will fuck you, Bill! I'll fuck you with my hot cunt!"

Leaning against the wall outside the open door of her son's bedroom, Susan listened with excitement. She had pulled her skirt up and shoved her hand into her panties, rubbing at her swollen clit, wanting to watch her children as they fucked. Just hearing them sent shivers of pleasure up and down her flesh. It thrilled her until she thought she would come just from listening.