I watched as her feet left the bed and went airborne. I watched as her spread legs caused her lips to part showing me a welcoming home for my aching m...mber. Her clit was so hard and extended that it could almost pass as a penis it's self. Oh I was so horny now. That's when I slipped and allowed a moan to escape my lips. My sister froze and my hart started racing more then her playing had caused. I backed away as I saw her start to rise. I didn't want to go too fast because if she didn't get up. I couldn't miss this opportunity!“id love to” I shakily replied. I was scared as hell. We discussed details, locations, then he showed me himself on his webcam. I was convinced by his wonderful, perfect, 8 inch cock. His pubes were trimmed neatly, not too long, not too short. It was a good 8 inches long, maybe 9, and 1-2 inches wide. I wanted it in my mouth so bad. We started masturbating together again, and I was fingering my asshole. I soon climaxed and got dressed.Ran out of the house with. Off we went to the pool. There were several other people at the pool so the girls played and the guys sat and watched. After about an hour we went back to the condo. Steve said, OK, everybody put your wet suits in the bathrooms and come back out to the living room. No clothes allowed. We all followed instructions. When we were all there, Steve put a DVD in the player. It was porn about old guys having an orgy with young girls. I dont know where he found one like that. You sure couldnt just buy. I licked it and sucked on one of the cheeks. I could also see her dangling pussy lips. I loved looking at pussy lips on porn sites. I would put in a search just for that. She stepped out of her G-string and I threw it over to her other clothes, she said, “Would you like to slap it?” I didn’t need to be asked twice, but I wanted to wait till I was ready for that. I said, “Oh yes, I’d love to. I’ll get to that a bit later.” She stood up and turned to me and said, “Now who’s being a tease!” .