I knew N. for a while but had just met her sister G. Out for the evening with my buddies I was surprised to run into N at my favorite bar. She looked completely different outside of the normal work enviroment which had been our past link. Now she and her sister were asking me and my roommate to leave with them which we gladly agreed to. My roomy hooked up with N in tte front seat while I was in the back with G-all of a sudden she's on top of me sucking my tongue out of my throat. This must have gotten to the others in the front because the next thing I see is we are at N's house instead of the next bar. The sisters lead us thru the house to the deck with a built in pool and proceed to holler it's time to skinny dip. Well I usually don't wear underwaer so I got naked first and dove in while G stripped down and followed. We were all over each other in the pool trying different positions when she told me to follow her. Up the stairs we went to the spare bedroom were we went at it all night long in every imaginable position until the sun was just rising out the window. Next time the following night when the sisters decided to swap and try for a repeat.