Bobby's hands were at his side and Lynn's breath was hot on his shoulder as she took the base of his cock between finger and thumb. Her cunt was close to shattering as she ran her other hand down and felt her son's hot piss. She shook deliriously from head to toe. His piss was so hot, so wet, in her palm. Before he finished pissing, Lynn closed her fist about his prick and began to gently jack on it.

"That feels good, Carolyn," Bobby whispered, leaning his head back.

"Mmmmmmm," his mother responded, her voice disguised by the throatiness.

She squeezed his cock, cutting off the stream of piss. Lynn pressed her tits flat against his shoulders, rubbing her lower stomach back and forth, pressing her fiery cunt against him, trying to make her cunt convulse with orgasm. Bobby's cock hardened inside her jacking fist. Lynn ran her hand swiftly back and forth, lowering her other hand to squeeze his balls.

"Not so hard, Carolyn," he said. "You sure are jacking my cock fast. You want some more?"

Lynn moaned, licking at her son's shoulder. She bit it gently with her white teeth, pumping almost frantically on her son's cock in the darkness. She began to make soft, high pitched squeals of ecstasy, jerking faster and faster, squeezing and twisting at his young balls.

Lynn couldn't stand it any longer.

Her son thinking she was Carolyn created the most agonized desires ever within Lynn's body and mind. With sudden clarity, she realized that she could do anything with her son, anything at all, and he would never know it was his mother. He would always think it had been his sister.

With a soft, urgent cry, Lynn fell to her knees behind him. Keeping a powerful grip on his cock and balls, she shot her face forward and began to kiss and lick wetly and hotly at his young ass. Bobby gave a startled yelp, but stood in trembling pleasure. Driven almost out of her mind with lust, Lynn scraped her tongue up and down her son's ass.