Bob turned his head, seeing his sister rubbing her hand up and down her crotch. When he turned back to his mother, Marla had opened her knees more, and he found he could see the creamy inner flesh of her thighs, with the shadow of her panties under her skin. He stared a long moment, then looked at his mother's face.

"I know what you can see," Marla said, smiling at her son.

Bob lowered his eyes again, and this time Marla opened her knees wider. Sally too, gazed under her mother's skirt. Marla felt her cunt pulsating, felt the wetness seeping through her panties. She dragged her skirt up, inch by inch, watching the faces of her son and daughter.

Bob's cock looked as if it was about to burst from his pants.

"Want to see more?" Marla asked, throatily.

"Oh, yes, Mom!" Bob groaned.

"Sally?" Marla asked her daughter, who was now rubbing her fingers up and down her crotch with envious pleasure.

"I want to see it, Mother!" she gasped.

Marla's mind spun with pleasure. This was a dream coming true to her. In her fantasies, she had dreamed her son and daughter would want to see her, see her cunt. Her mind boiled with desire. Here, with her son and daughter, she could enjoy everything she dreamed of, longed for. And no one would ever know. No one could ever call her bad names because of her boiling hungers. Bob and Sally wouldn't, she knew. They wanted it as much as she did.

Marla had inched her skirt up until it was almost at her crotch. She watched their faces closely, feeling the heat searing her flesh. Bob was gasping softly as he stared at what his mother had exposed. Seeing her this way sent his balls into a writhing ache, and his cock jerked with powerful hardness.

Sally was gazing at her mother, too, and now she had lifted her skirt and had her hand inside her tight panties.

"Look what your sister is doing, Bob," Marla whispered.