My wife, her sister and mother look very much alike. They are very close and being European, free with their nudity. I have seen them nude many times. Usually sunbathing but it's nothing for me to be over at my in laws home and have my wife's mother come out of the bathroom or bedroom stark naked and pour a cup or coffee or get a Coke. It happens so often that I don't even raise an eyebrow. A dick, yes. But never an eyebrow.
We've been married for thirteen years. A second marriage for both of us. My father in law passed away six years back. A great man. My sister in law has lived with several men but never got married and hasn't any children. We have a large home and it's not unusual for mother and sister in law to stay over.
After a particularly hard day at work I came home to the three of them in our hot tub. It was apparent that they had been into the wine. All of them acting very silly. I decided to get naked as well, took out a cold beer and joined them. Not a first time.
We talked and laughed telling stories. My sister in law sitting beside me place her hand around my cock. "I haven't one of these in a long while!" she said, laughingly. My wife laughed as well as my mother in law who added, neither have I.