Before, she would not have admitted it, let alone tried fucking him. But now it was different. Now they were both excited, looking down at the naked Mary, side by side, and she had Bobby's cock in her hot hand.

Susan wanted to fuck – to fuck her son.

Mary was moving down on the patio, twisting her hips about as if she were having an erotic dream. Both Susan and Bobby watched her with wide eyes. Mary's legs parted and closed, like a pair of scissors, and she seemed to be arching her hips up and down. The magazine was once more covering her face, but Susan didn't care. She knew what Mary's face looked like; it was that deliciously sweet body she wanted to look at.

Mary's hands were moving up and down her body now, stroking, caressing, touching lightly. Susan and her son watched those hands cup those tits and squeeze into the tit mounds while those thighs continued to open and close.

Susan pumped a bit faster on her son's cock, feeling it swell even more in her hand. She knew what would happen soon if she kept on jerking his cock… he would come. And, Susan knew immediately, she wanted to make her son come off, to make him squirt come juice as her fist stroked and pumped his cock.

"I bet Mary has a hot cunt – don't you, darling?" she began to whisper again. "I bet her cunt is like liquid heat, and I bet she'd fuck, too. Yes, I said fuck, Bobby. That word is another one I like so very much. Cunt and fuck. Don't those words make you feel hot and excited? We used to use them all the time, your father and I, when we fucked. And we fucked constantly.