She felt her son's hand move along her arm, then under it. Her breath caught as he cupped her covered tit, feeling it, squeezing it. She began to pant heavily as she jacked his cock, her tits swelling into his hands. Her fist pounded furiously, her pussy swelling and vibrating inside her panties. Her son's cock dripped heavily, his juices making the shaft of his cock very slippery for her fist. She did not say anything when he released her tit and pushed his hand down her side, over her hip, to fondle the cheeks of her ass. She just kept jerking on his hard cock, her eyes glassy, her breath hot and gasping.

She felt his hand slide down the back of her skirt, then up under it. His hand on the back of her thighs sent a ripple of heat through her, and she could not resist a wiggle of her ass. When his palm cupped her pantied ass, she hoped he would slide his fingers between her thighs, but instead he squeezed her ass tightly, arching her hips high into the air.

Robbie came.

A moan bubbled from his mouth as come juice spurted high into the air, splashing back down onto his stomach, coating his mother's pumping hand and lower arm. Karen whimpered and pulled hard-on his cock, watching beads of creamy come juice drip over her fingers.

As his cock softened, she pulled her hand from it, and started to lean down to kiss him, when he pulled his hand from her ass and skirt. She stepped back, looking at him, wiping her hand on her skirt. Robbie picked up his jeans and slipped into them, avoiding her face as if he were ashamed. She stood in his room and watched him leave.

Karen felt no guilt about what she had done with her son. She felt good about it, and wanted Robbie to feel good about it, too. But the way he had avoided looking at her, she had no idea what he felt.

She spent the rest of the afternoon thinking, wondering, hoping. She had put his shorts in the laundry hamper and bathed and changed her own clothing. She now wore shorts, tight and revealing, with a white T-shirt, her tits naked under it. The dark circles of her nipples showed, the hard tips pressing at the stretching fabric. Her cunt was outlined by the tight crotch, and the bottom swells of her shapely ass showed.