There was a strong urge to turn and look at him before he slipped under the sheet, but she resisted it. Once Mary felt her son was safely covered, she turned out the light, then went to the bathroom. She closed the door and undressed, pulling her nightgown over her head. If the gown was one of those concealing cotton things, it wouldn't be so bad, she thought. But every gown she owned was revealing, almost sheer. Making sure the bathroom light was out so her son couldn't see through the clinging gown, she rushed to her own bed and quickly covered up.

She lay on her back, her body rigid, her hands pressed against her lips. She was trembling, and nothing she could do stopped it. In her mind she was seeing her son's cock standing up so hard, and it seemed as if she could still feel it throbbing between her lips.

Mary lay in the darkness for a long time, listening to her son toss and, turn in bed. He seemed restless and unable to sleep. That was how she felt, too. Her tits were swollen and her nipples protruded against the sheet. There was an aching sensation in her cunt, and her cunt was pulsating with moist heat.

A new sound came to her. It was a rustling sound, and she glanced in her son's direction. Despite the heavy drapes at the window, she could see the outline of his body, and she gasped softly as she watched the sheet rising and falling. He's jacking off, she thought. Steve is jacking off… because of me, because I sucked him off this afternoon and he wants me to do it again. Mary couldn't stop herself. The request came out unbidden by her mind.

"Steve?" she called softly.

The rustling stopped. "Yes, Mom?"

"Get in bed with me," she whispered, not knowing her own voice.

"What, Mom?"

Louder, she repeated it. Still facing the ceiling, from the corner of her eye she saw her son move as he threw the sheet off. He was wearing jockey shorts, she noticed, but his cock was sticking out from the crotch.