Got caught by my mother in law
I went to the in laws on my lunch break to "pick up something I had left there". Unknown to me my mother in law was working from home and had popped out to the shops. She came back and found me wearing nothing but her panties wanking myself off to several pairs of her dirty panties and bras. I was so "in the zone" I didn't hear her come home and come upstairs. As I saw her I let go of my d*** but it was too much and I pathetically shot my load in front of her. In the panic I grabbed my clothes and ran off in her panties leaving the other pairs and my c** on the carpet. Once dressed I confessed to being attracted to her and begged her not to tell my wife. It's been 3 days and she hasn't but we're going over for dinner tonight. F*** knows how that will go!