After I was married I used to go to my mother in law’s house to wear her clothes and lucky me for me my sister in law, who is a knock out, lived there too.
Well one day I got there and picked out a nice outfit skirt, blouse, slip, panties, bra and hose. I went down stairs to get changed and have some fun.
Well I brought down an extra slip, laid it on the rug and proceeded to rub my cock on it. While doing this and not really paying attention my mother in law