I had jokingly told my wife that it would be fun to have another women with us. To my suprise one day eating lunch at a resturant my wife and her sister come back from the restroom laughing. A couple of weeks later we went out of town to the sister's house to visit. We were at water park and my wife said the I needed to talk to her sister and tell her that I wanted to have fun tonight. We went to stor and bought strawberries and cream. That night while my wife's sister's husband was at work we played. My wife went into the kitchen to get strawberries and cream and my sister in law started undressing me and going down on me. Later while I was going down on her, I looked up and my wife was sucking on her sister breast. Later I screwed her sister then did my wife.