"You just gotta keep this promise," Bobby gasped.

"I will," Julie gurgled, swirling her long tongue about the head of his cock. "I will, honey, but let me do it my way. Don't be so eager. Just relax and enjoy it."

Carol wanted to press her hand into her own cunt. It felt so hot and wet between her thighs now and her panties were soaked with the seeping juices of her cunt. But she was afraid to move, almost afraid to breathe. She didn't want Julie or Bobby to hear her, afraid that if they did they would stop. Carol wanted to watch this, wanted to watch her sister suck Bobby's cock. She didn't understand why, but she wanted to watch it all very much.

Julie held Bobby's cock at the base, swirling her tongue up and down the shaft, from his balls to the swollen head. She lapped at the seeping juices of his piss hole. Carol could hear, the soft gurgles, her sister made and the groaning pleasure of her nephew.

Julie slipped her wet lips over the head of her son's cock, her eyes still twinkling up at his young face. Bobby groaned as the wet heat, of his mother's mouth scalded the tit flesh of his cock, Julie slipped her hands up and down her sons hips and thighs, sliding her lips down on the throbbing hardness.

Carol watched hotly as her sister's lips pressed into the base and saw for the first time that Bobby had only a few hairs there. Julie had her son's cock buried all the way inside her mouth. Carol then saw her sister bring a hand up between Bobby's thighs and lift his young balls to her chin, rubbing them there as she twisted her lips about the base of his cock.

Julie made moaning sounds deep in her throat as she sucked hard on her son's prick. Carol's cunt twitched, the hairy lips swollen almost painfully, her clitoris bulging at the wetness of her panties. She couldn't remember her clitoris ever being so hard or the wetness of her cunt so intense.

"Oooooh, Mom!" Bobby groaned.