Your father was a great fuck, Bobby, and I bet you are, too… Your cock feels almost like your father's, so hard and long and thick. Look at Mary, baby, look at her tits and her cunt. Wouldn't you like to stick your cock up her cunt and fuck her? I bet Mary's cunt would suck on your cock while you fucked her, don't you? She looks sweet and innocent, but she isn't. If she was, she wouldn't be out there naked, knowing people could see her. Wouldn't you like to feel her cunt squeezing your prick, darling? Oooo, you'd love that!"

Bobby's cock was throbbing so hard and hot in her fist. Susan pumped his prick faster yet, holding it tightly. Her cunt was boiling with need, and she wanted to rub her pussy as she fondled her son's cock. But she didn't touch herself, not this time. She continued to talk softly to Bobby, telling him how hot and wet Mary's cunt would be.

"That would be better than a fist, honey," she said as they watched Mary sliding her hands up and down her thighs now. "A fist can do a lot for a hard cock, but a cunt is always best. Look at her! I think she's going to play with her pussy. Look!"

Mary did, indeed, run her hand between her thighs, but only once.

"You should fuck her, darling," Susan said, feeling his cock burn into her fist. "You should let her know you watch her sunbathe, tell her how hard it makes your prick, that you'd like to stick it up her pussy and fuck her."

A grunt came from Bobby, his hips jerking as Susan gripped his cock hard.

"Are you about to come, Bobby?" Susan asked in a thick, husky voice. "Are you going to come? That's okay, baby… you just come alt you want. Mother will help you. Look down at Mary and pretend you're fucking her while mother makes you come. It's all right, Bobby. We're just pretending. It's only make-believe, a fantasy. All boys and girls have those, you know. Just pretend mother's fist is Mary's cunt and that you're fucking her, and come all you want."