"Mom…" he said thickly.

"Yes, Robbie?" she purred, twisting her ass with obvious meaning. "What is it, baby?"

"Ahhh, Mom…"

Karen twisted and sat up, swinging her long legs over the couch, looking at him. She slowly parted her knees and stroked her hands up the satiny insides of her thighs, licking her lips suggestively. Robbie gasped when she pulled her hands into the crotch of her tight shorts, her fingers spreading over the cloth. She sat up straight, pushing her tits against the T-shirt, her nipples straining.

Karen slowly stood up, running her hands up and down her sides, over her hips, then her ass, back to her stomach again! Her eyes blazed at the bulge in her son's pants, and she moved her hands up to cup her tits, squeezing them. She pushed her hands downward and slipped them under her tight T-shirt.

Robbie made gasping sounds as he watched. Karen pushed her hands upward, the T-shirt climbing. She covered her tits with her palms as she gazed hungrily at his concealed hard-on. Taking a deep breath, she lifted the T-shirt above her tits, showing them to her son. Her tits were rounded, firm, spaced widely, light brown nipples jutting upward stiffly.

With a quick motion, Karen pulled the T-shirt over her head, standing before her son naked from the waist up. Robbie sucked in his breath, his eyes wide open. His hand pressed against his cock, moaning softly as he looked at his mother.

Karen tugged at the zipper in the back of her shorts, bringing it down, then slowly pushed her shorts down, wiggling her ass because they were so tight. She was not wearing panties, and when the thick patch of curly pussy hair became exposed, Robbie moaned loudly, smashing his palm hard-on his cock, his balls on fire.