Prudish Sister-in-lawThis happened a few years ago when my wife and I were visiting my brother and his family. I had always thought of my sister-in-law as somewhat of a prude by the way she acted and dressed most of the time.
It was the first night of the visit and my wife had gone to take a shower. I was tired from the trip and decided to get changed into something a little more comfortable than jeans and a long sleeve shirt. I had ******** off all of my clothes, when suddenly the door opened. I immediately thought my wife had returned from her shower, but was surprised to see my sister-in-law standing there checking out my nakedness. We both kind of froze for a second, before I tried to cover my **** and balls with my hands and she mumbled something about being sorry as she closed the door.
My heart was pounding due to this sudden exposure and I quickly finished changing, not knowing if I should go out and apologize or what. A few minutes later, my wife did return and I told her what had happened. She thought it was funny and told me I had no need to apologize for anything. She said the sister-in-law was to blame for bursting into the room without knocking.
My sister-in-law did not speak about the incident that night, but my wife was certainly horny that night and we ****** three or four times, having to be careful not to wake our nieces and nephews in the neighoring bedrooms.