Peggy yelped. "Ohhh, Robert!"

The head of his cock had penetrated the tightness of her asshole. Peggy thought he was ripping her apart, but then the slight, sudden pain had become surprisingly a good feeling. She felt her asshole stretch around the swollen head of his cock, and then it was going deeper into her ass. Peggy moaned and whimpered, but the sounds bubbling from her were those of extreme pleasure. She had never felt anything like this before, but she admitted to herself it was fantastic. She had not thought of being fucked up the ass.

"Ooooooh!" she whimpered, and her ass lifted to meet his cock. "Robert! Oh, Robert!"

She felt more of his cock slide up her asshole, and the deeper it went, the better it felt to Peggy. She felt his balls touch the lips of her burning, seeping cunt, and then Robert was bracing himself above her. When he started fucking her, she writhed and wiggled her ass, arching toward him. The way his cock slid in and out thrilled Peggy. Her asshole was stretched widely and gripped her brother's cock tightly, flexing on it with a power of its own. She loved the feel of his balls as they banged against her cunt, and she could not stop her mewls of ecstasy. She loved the way he grunted above her.

"Ooooh, Robert!" she whimpered. "Do it faster! Ohhhh, screw it, Robert! Oh, yes, yes! Fuck me, Robert! Ohhhhhh, fuck me good! I love it, love it, love it!"

His cock thrust faster into her stretched asshole, and Peggy thought she was dreaming. Nothing could feel this good, she thought. It was even better than when her boyfriend had fucked her. It was good, different, and so terrific she thought she would go out of her mind.

Peggy twisted her naked little ass in a frenzy, shoving back at him as he stabbed faster and harder up her asshole. She squealed with delight, her cunt throbbing and her clitoris almost painfully swollen. She could feel an intense orgasm already boiling inside her trembling stomach. She slammed her naked ass back against his driving cock hard.