Bobby began to shake. The nearness of his mother's tit against his mouth was so very exciting. He thought he could feel her nipple at the corner of her lips, and he wanted to turn just enough to put the tip of his tongue against it, but he was afraid of what she would do.

"Tell me…" Linda purred with her lips close to his ear.

"I called her a… a… cunt-face," he mumbled.

"A what?" Linda lifted her head, looking at him. "You called your sister a what?"

"I won't do it again, Mom!" he promised easing his lips toward her nipple.

"Bobby," Linda said, cupping his face. "Do you know what that is? That name you called Sarah?"

Bobby nodded, looking downward at his mother's nipple.

"Are you sure?" Linda asked.

"Well, kinda sure," he said. "No, I guess I really don't, Mom."

Linda felt him trembling, knowing what he was trying to see. Without thinking of what she was doing, she pulled him down and against her body, pressing his face between her tits. She heard him moan. Her hand moved along his arm to his thigh, then up his thigh. Her fingertips touched his cock.

She heard her son moan again, as she traced the outline of his cock.

"Bobby, I'm going to do something… something I shouldn't. But you must never say a word, not to your sister, not to anyone, do you understand?"

He nodded.

Breathing heavily, Linda began to rub his cock. She felt his prick throb with such hardness that it excited her, made her cunt pulsate wetly. She felt the swollen head of his cock, then she moved her palm up and down the hard shaft to his balls, then up again.

She felt as if she were on fire, as if her cunt was on fire, the wet flesh melting. She drew away from him, looked for a long time into his glassy eyes, her hand holding his cock.