She smashed her face against my neck and sucked in breath through the pillow – unable to do anything but concentrate now on the fact that she was ap...roaching the edge of her shuddering orgasm. The heat on my hand was incredible, and I could feel the sweat coming off of the rest of her arm and her face. There was no way that she could stop the sounds she was making now – but it was also obvious that she didn’t care anymore. Neither did I, really. I pressed up with my palm, grinding it softly. Everybody was wet and miserable by the time they decided to pitch camp. John had planned for the rain, so he had a shelter-rig which could be used to cook under and keep the rain out of the food while they were eating. After supper, they all went to bed in the wagons. They had enough canvas covers to keep out the rain, but it put something of a dampener on the sex, though nobody abstained.The next morning, they ate breakfast and broke camp, but the ground was now wet enough that the carts were. She led me upstairs to her bedroom. She untied her bikini briefs and they fell to the floor. We were both naked as Renee climbed onto the bed. I followed her and we kissed again. My hands roamed over her beautiful body down to her pussy. Her thick, dark, pubic hair was trimmed short. She opened her legs a little further and my fingers probed her hot wetness. I figured she wanted me to go down on her, so I made my way down there. At nineteen, I wasn’t very experienced sexually so I didn’t know. Her sucking became a little more urgent then. Watching my sister play with her tits was too much; soon I felt the cum rising to my cock. But she didn't stop. Quickly I thought, well, I never woke up before, so I better not 'wake up' now! My hips were moving involuntarily; Jill didn't stop so this must have been normal. When I saw Jill's hand quickly move to the front of her panties and rub her crotch I couldn't stand it anymore. I came into my sister's mouth, trying not to thrust too hard. I.