Bob turned her head and saw Sally's hand inside her panties. He giggled and shoved a hand to his cock.

"Mmmmmm, that's it, Bob," Marla gushed hotly. "You can do it, too."

Bob lost any reserve he had. He fumbled with his pants, Marla watching him in excitement. His cock popped from his pants, standing up very hard. It was not a huge cock, but his cockhead was round, and smooth and very swollen, his cockshaft throbbing. Marla felt her cunt suck inward with hunger as she stared at her son's exposed cock. Bob closed his fist about his cock and began to pump on it, his eyes darting at what his sister was doing, then back to his mother.

"You did say you wanted to see more, didn't you?" Marla asked her son and daughter.

Both nodded their heads eagerly.

With a soft whine of pleasure, Marla swung her knees wide, jerking her skirt to her waist at the same time. She scooted her ass to the edge of the couch and shot her palm to her pussy. She rubbed hard, twisting her ass about.

Having her son and daughter see her touching herself sent burning hungers through her body. With a squeal, she jerked the tight crotch of her panties to one side.

"Ohhh, I'm so hot!" Marla wailed, lifting her revealed cunt into the air and rubbing a fingertip frantically at her swollen clit. "I'm so hot I can't stand it!"

Bob gulped as he gazed at his mother's hairy cunt, his fist squeezing his cock very hard. Sally was making gasping sounds, her hand very busy inside her panties.

"Take your panties off, Sally!" Marla hissed. "Let us see your sweet cunt! Show me and your brother your pretty pussy!"

Sally and Bob, intensely aroused, stared at their mother. Marla was almost out of control now. She held her panties to one side, and began to thrust her finger in and out of her curt. The wet sounds seemed loud in the living room. Sally pulled her hand from her panties, looking down at her brother. Bob was staring with wide eyes at his mother, his cock jerking hotly inside his fist.