"Not so fast, Sally," Marla said. "You'll make him come."

Sally pulled her hand away, but her eyes gazed at his cock hungrily.

Marla drew her hand away from him. She sat back on the bed, lifting her knees to her chin. Bob stared at his mother's thighs and crotch.

Sally, very eager to see her brother fucking their mother, slipped off the bed and pulled Bob's shorts right down. Bob, his cock waving about in hardness, continued to gaze at his mother's exposure. Marla understood her son's excitement, and parted her knees. She slipped her hand down and pulled her panties from her pussy, showing it all to him.

"Ooooh, Mom!" Bob groaned, his eyes turning hot and glassy.

"Mother is gonna fuck you, Bob," Sally said, dropping his shorts to the floor. "She said you could fuck her."

"Oh, Mom, can I?"

Marla nodded her head, her eyes bright with desire.

Bob's cock lurched up and down, and Marla saw the beading wetness at his piss-hole. She lifted her ass, stripping her panties off quickly and throwing them over the side of the bed. She then lay back, her skirt at her waist, her fingers opening her top to let her tits out. Her eyes kept gazing at her son's balls and cock, her tongue running about her lips.

She opened her legs wide.

Bob gasped with excitement as he stared at his mother's cunt, seeing her pussy-hair glistening with juices, her pink cuntlips and her tight clit. Marla felt her cunt clamp tightly, then open all by itself. With her shapely tits showing now, she slipped her hands down, sliding her fingers through her thick mass of soft-hair. She pulled the lips of her cunt open, then squeezed them together, lifting her ass and twisting it in an inviting wiggle.