I decided to up the ante a little and slowly moved my right hand over onto my thigh and scratched my upper thigh and then rested my fingers across my ...ussy. My heart was pounding as I watched Tyrone rub a huge bulge in his shorts that was growing even larger with each passing second! Marcus stopped trying to leave and stepped around his friend to see what I was doing a little more closely himself. When he saw my fingers start slowly circling my clit through the thin material Marcus bit his. ..I'm cumming in your arse you filthy slut...FUCK!" I'm cumming too!!" cried Crystal.With a long cry of triumph and ecstasy, Joe /slammed/ his cock deep intoCrystal's rectum and began spewing his cum. Crystal had her secondclimax at that point too, panting and squealing with unbearable joy asher brother's cock exploded far in her bowels.As he climaxed, Joe remained on top of his sister with his cock wedgedfar in her bowels. It was a prolonged orgasm and he spent almosttwenty-seconds in the. Laura noticed that her guess had been right - she didn't see a single member with any clothing whatsoever. After splashing around for a while Laura and most of the others came out and dropped down on blankets or towels. Barb gave everyone a reminder about the intense sunlight and there was a general move to apply sunscreen. John came over and joined Laura on her blanket. "Want some help spreading that? he asked."I wouldn't mind. It's hard to reach my back, but I'll bet you want to spread it. I almost suspected that Kelli had been doing more than just talking on the phone even before that moment, and I knew her well enough to suspect that she had her cell phone cradled between her ear and her shoulder while she was at least playing with her large breasts and maybe even sliding her hand down inside her panties to play with her pussy and get off. In fact, I knew Kelli well, because that was exactly what she'd been doing."Tom, get me hot and horny for our date tonight," Kelli said..