I love having my cock inside the gusset of my wifes worn panties and wanking until I cum. I do this almost everyday when she is out of the house. The smell of her discharge on the crotch and its taste is a real turn on and I've been doing this for years.
When young I used to cum in my mom's clean panties kept in her drawer. As she soon found out asked me not to do it on her clean underware again, proposing with a funny smile that whenever I feel like doing it I can use her already used knickers.
I've done this many times with my half sister's panties, I also liked to cum in them and put them back in her drawer for her to wear without knowing anything