"Not this time, baby," Julie whispered huskily as she slowly pumped her fist up and down. "I'm not going to jack you off this time."

"But, Mom," Bobby complained, "it feels better when you do it for me."

"I know it does," Julie replied, pumping a bit faster, watching her son's cock flare, beads of moisture forming on his piss hole. "I know it feels very good when I jack you off. But remember my promise to you?"

Carol stared at her nephew's cock, her lips parted slightly as she tried to remain silent. She was watching and listening and her own cunt was on fire, the crotch of her panties drenched with the seeping juices of her cunt. Her tits felt ready to burst from her confining bra as she heard Julie talking to her son and heard his replies.

Bobby nodded his head, his eyes expressing pleasure. "I remember, Mom," Carol heard him say. "Are you gonna do that to me now?" Julie pulled upward on her son's cock, grinning at his eager face, nodding her head.

"I'd love to now, honey."

"Ohh, yeah, Mom!" Bobby groaned, lifting his hips, pressing his hard-on into his mother's fist.

Julie giggled, a childish, naughty sound that Carol remembered from many years ago. Julie had always been a little naughty, she remembered. It was Julie who had always been the more adventurous of the two. It was Julie who never hesitated to lift her skirt, drop her panties, and take a pee whenever and wherever she was. It was Julie who had experienced a hard cock in her cunt first and then assisted Carol in taking a hard cock into her own cunt that first time so many years ago.

It was Julie who had married young and had told Carol the things she and her husband did in bed. It was Julie who always pried into Carol's sex life, wanting to know all the juicy details. Carol had been the bashful sister, yet she had always followed Julie's lead.