I had just had a shower and I was going to my drawer where my underpants were. As I opened the drawer I found a pair of what must be my mum’s knickers. I looked at them for a second and wonderd how they got there. She must have put them in there by mistake I thought. I went to my room and decided to try them on anyway. As I did I got really hard and took them off and wanked into them and jizzed the gusset. I put them in the bottom of the washing
