Giggling, Sarah peered down and watched her brother's cock disappearing and reappearing repeatedly into and out of her sister. "God that's so fucking hot," she said.

After a few minutes of pure thrusting pleasure, she began to come again, her moans becoming yelps as she lost all control, her voice issuing forth in sounds of pure ecstasy as he took her again, and again.

Finally he slowed as she fought for breath, her entire body slick with sweat and sex, her breasts heaving with breath and pleasure, nipples erect and pussy convulsing around his cock.

"God..." she moaned as a final wave of pleasure hit her, her pussy convulsing a...