As she whispered seductively to her son, she began to stroke his cock with her fist. She didn't look at him, but looked down at Mary, just as Bobby was doing. The feel of her son's cock in her hand was sheer heaven to Susan. She had not felt a cock since her husband had passed on. But that had never stopped the intense desires she always had.

Bobby seemed to be trying hard to concentrate on the naked beauty of Mary, as if ignoring what his mother's hand was doing to his cock. Yet Susan could see, from the corners of her eyes, how his eyes blazed with burning pleasure. She felt the throbbing of his cock increase against her palm and she closed her fingers tighter, squeezing enough to make him gasp. She jacked his cock and Bobby, intensely excited, pulled his hips back from the wall far enough so she could stroke and pump his prick easily.

"She has lovely breasts, doesn't she, Bobby?" Susan continued whispering in a throaty, seductive voice. "Or perhaps I should call them titties. Isn't that a nice word, honey titties? I love it. Wouldn't you love to feel those titties, squeeze them in your hands and make Mary moan with desire? Look at that pussy hair, Bobby. It's blonde, thick and darker than the hair on her head. Right? Don't you wish you could see her better? We can almost see her vagina, can't we? Or should I say her… pussy? Maybe you like the word cunt better than pussy, Bobby? Do you? I do. I love that word, cunt. It makes me shiver when I say it. Say it for me, darling. Say cunt for mother."

But Bobby could only gasp and stare at Mary. His cock throbbed and he felt so hot. Susan knew what he felt, could feel it in the way his cock throbbed, in that beautiful, ever so sweet hardness. She squeezed his cock again, and Bobby groaned softly. She saw he was licking his lips, and then she turned back to look at Mary. She pumped her fist back and forth on her son's cock, no longer wondering what had come over her. With the feel of Bobby's cock in her hand, Susan knew what she wanted, what she would love to do with her son.