She felt his fingertip probe at the cheek of her ass, very lightly, as if he was afraid she would suddenly twist away from him. Peggy wanted to twist away, but she was frozen there by the ecstasy that was swelling up in the pit of her stomach. Her breathing was now coming in hot gasps of pleasure.

"Peggy, I…" Robert stopped. His hands rested now on the cheek of her ass very lightly.

"Robert, please… don't," she whispered. But there was no conviction in her voice. Her ass writhed beneath his palm, and she couldn't stop it.

Her eyes burned on the head of his cock, and before she knew it, her hand moved. With dazed vision, she watched her hand reach out, then she was brushing the tips of her fingers along the dripping tip of his prick. She felt the slippery moisture, then her fingers closed about the head of his prick.

"Ooooooh," she whimpered softly.

Robert's hand moved again, and he was feeling all over her swelling ass. Peggy twisted and writhed her ass cheeks against his hand.

She gasped again when she felt her brother trying to tug her bikini bottoms down. Peggy had pulled more of his cock from the frayed edges of his cut-offs, and she now had a tight grip on it. She could feel the powerful throb in her hand, and she began to jack on his cock slowly.

She felt her brother pulling her tight bikini bottoms down, and she felt the hot sun on the naked cheeks of her ass, then the garment was at her knees, then at her feet. Peggy lifted her feet so he could remove them. She watched, dazed, as the bikini bottoms fell to the lawn. She was now naked, lying in the backyard near the pool, in broad daylight, and her brother was feeling her saucy, round ass, and she was pumping on his cock. It was crazy, deliciously wicked.

"Peggy, I've gotta…" His voice sounded low and husky. "Oh, Peggy!"