I could feel the heat building, her pussy getting moist, then wetter as my caresses continued. Her breathing became heavier as her sleeping b...dy became more aroused every second. My sexy sister moved her hips slightly, parting her legs just a bit giving my hand easier access to her now wet pussy. As my fingers penetrated her opening, she opened her eyes to see my erect cock standing proudly before her. Realizing what I was doing, she reached out and began to softly stroke my hard thick. There was a dock with a boat, swimming pool, hot tub and a guest cabin. The property was very private and there were no neighbors around. It was their own private retreat. They owned the property for years, but Vicki and Frank had never made it down for a visit until now.It was a long drive down from the big city. When Vickie and Frank arrived, they did not bother unpacking, but went directly inside to find cocktails waiting. It had been several years since they all got together. The four. Whilst my mate was out delivering or collecting and I was on lookout i found my self looking at all the girls walking by the van. I remember it starting in summer as the clothes most of the girls wore were very skimpy. Suddenly I thought Fuck I'd got a hard on just looking at these girls.For some reason I got really turned on that I was only a matter of inches away from a total stranger with a throbbing boner in my pants. One day it got too much though, there was a young girl probably 19, 20. "Well of course you were good. I mean you were my first, and I don't have anybody to compare you to, but I had a really good time Bobby. And I think Marge would have a good time too if you were maybe a little more gentle or something. Come on, wouldn't you like to see Margie naked?"Another stupid question. But guys are stupid too sometimes, and that question reoriented my thinking. Of course I'd like to see Large Marge naked. Those huge tits must be mouth watering. I'd dreamed of seeing those.