Billy watched his mother moving down the hall, his eyes on her ass. The jeans outlined his mother's ass very well, and the shape excited him. Remembering what Doctor Nancy had asked him to do, he followed his mother. He innocently stood in her doorway, watching her. Joan had not looked back, never dreaming her son would follow her.

Standing at the side of her bed, she removed her blouse, then slipped her tight jeans down, wiggling her ass. Watching his mother wiggling, seeing the creamy roundness of her ass, Billy felt his cock grow hard.

Naked, Joan stood a moment, eyes closed, remembering how the pretty girl's tongue excited her cunt. She ran her fingers through her cunt hair, touching lightly at the wet lips of her pussy. She pulled upward, stretching her cunt, and mewled softly as a good feeling went through her. She probed at the tip of her clit, the touch making her hips jerk.

Sighing, she stopped touching herself, and turned toward her closet for her robe.

She saw her son.

Billy was leaning on the doorjamb, his eyes enormous and very bright. He was gazing excitedly at his mother's naked body, his cock outlined in hardness along his left thigh. Joan froze, her eyes riveted upon the boy's cockbulge. The burning hunger of her cunt brought a sob to her throat. She clenched her hands into fists, but couldn't take her eyes from his cock.

Billy's eyes moved, though. He looked at his mother's straining tits, seeing round firm tit flesh, the tilt of her rubbery nipples. Then he slipped his eyes downward. They were somewhat unfocused and glowed with desire. He stared at the thick mat of cunt hair, her tong, slim thighs, then looked up again.

"Billy," Joan finally managed to whisper. "Don't look at me that way."