"Shit, oh fucking shit!" Paul grunted, crushing his full weight against her face. "Take it, you cocksucking cunt! Take it!"

Robin couldn't believe the iron-hard texture of his cock. It felt like a brick of granite covered with slippery, soft rubber. His cockhead totally filled the back of her throat, and even now it was growing, ballooning to what seemed twice its size! She shivered with delight as the thick round ball pulled upward, slipping over the roof of her mouth, burning against her lips, then slamming back.

Another hot wave of orgasm banged into her cunt with gigantic intensity. The pleasure was almost like some tiny animal in her pussy, trying to tear and claw its way out. The muscles of her slit convulsed tightly, forcing out a tiny stream of hot, frothy cunt juice. Her legs glistened with her release, the juices burning against her flesh like acid.

Paul flipped her over on her stomach and wrapped his legs around her neck, totally burying her head in his crotch. He leaned upward, crushing his stomach against the top of her head and began pumping his cock in and out of her throat with wild, brutal strokes.

"Christ, eat it, you fucking cocksucker!" He panted, knowing that any moment the torment of his furious fucking would explode in an eruption of total release.

Robin certainly didn't know what to expect, but instinctively, she knew that something wild and wonderful was taking place in her brother's wiry, throbbing balls. She reached under and grabbed them. The touch of his wiry, lush growth of hair, coupled with the heady, acrid aroma of his crotch sent her into another spasm of release. As she gagged and spluttered, she felt the base of his prick begin to jerk violently.