"Ohhh, sweet baby," Marla murmured, and pulled her son's cock into her hot mouth.

Bob gasped, feeling his mother's tongue swirl about the head of his cock, his eyes huge as he looked down at her. Sally began to giggle as she leaned over tone her brother's cock inside their mother's mouth.

Marla tongued Bob's cock, making throaty sound. She clung to the base with her lips, her tongue lapping it. Holding the head of his prick in her lips, Marla pulled a little harder, her tongue swiping about his piss-hole. Sally's eyes burned with a bright gleam as she watched, and Bob was gasping again.

"Ooooh, Mother!" Sally cried out softly.

Marla's eyes flashed into those of her daughter. She released the pressure on her son's cock by lowering her mouth. Again, she took it completely inside, working her lips at his cock base. The feel of Bob's cock inside her mouth sent tremors through her body. Although he was not hard, his cock tasted very good against her tongue.

With a mewling cry, she pulled from his cock, but buried her face into his crotch, nuzzling at his balls for a few moments.

"Want to stuck it?" she asked her daughter. "Oh, Mother!" Sally exclaimed. "I don't know about that."

"Why not, honey?"

"Mother, he pisses with that thing," Sally replied, eyeing her brother's cock closely.

"You pee with your pussy, too, don't you?" Marla laughed. "And, I pee with my cunt, and that didn't stop you from licking it."

"But he might get hard," Sally countered, her eyes staring fixedly at her brother's cock.

Bob lay with his hands behind his head, watching his mother and sister, grinning from ear to ear. He enjoyed the hot wetness of his mother's mouth on his cock, and he was more than ready for his sister to suck it, too. Marla was caressing his balls with a warm hand, urging her daughter to put her mouth on his cock.