"Oh, I can feel your load of cum in your nuts!" she moaned. "They're so tight! Pump me full, you bastard!"

"Not yet." Paul said, grabbing her tits with both hands. "I'm not through fucking!"

There was so much to see, so much to remember, Robin didn't know what to watch. Her glance took in the thick, slippery shaft of cock that jammed in and out of Gina's tiny hole, and then she watched her brother eagerly pull the girl's tits into his mouth, biting and chewing on the rosy, hard nipples.

She took her finger out of her mouth and ran her palm over her own tits. They weren't as large and ripe-looking as Gina's, but they were full and taut, pressing against her blouse. She squeezed the throbbing buds and felt a delicious stab of ecstasy flow into her body. She winced, giving a silent scream. Oh God, why can't I have a big cock in me too! she demanded to the world.

"Paul, oh God, Paul fuck me!" Gina said. "Shove it in as hard as you can and… and… and… oh fucking god, fuck meeeee!"

The intensity of the girl's yell startled Robin. She gaped at the girl with astonishment. Gina was frozen like a statue of a Greek Goddess, her face contorted in anguish. For a moment, Robin thought that Paul had ripped through her cunt and had killed her. But almost immediately, the girl began thrashing and writhing like a snake on a hot sidewalk.

"More! Harder! More! Faster! Oh fuck, fuck me to death… fuck! Fuck!" Gina yelled, her body moving up and down so quickly she became a blur.

Robin felt her own cunt explode with delicious spasms of release. She had to dig her knuckles into her mouth to keep from screaming just as Gina was. She bent over slightly, stroking her pussy with her other hand, feeling the juices in her slit ooze outward, wetting her jeans.

What she saw next totally amazed her. Paul flipped Gina over with a quick, deft move, and grabbing her behind the knees, forced her thighs up against her breasts. Her little, creamy pussy and asshole were jutting off the bed by a good foot. Paul, without missing a stroke, began pounding into her guts like a crazed animal.