Well when I was younger I just about lived at my friends house. He had hundreds of erotic magazines hidden in his room and he also got Soft Porn TV, so there was always something to do at his house. I got pretty confortable masturbating at his house.
He had a hot mom and I constantly had fantasies about her. One day he was watching porn in his room and I didn't feel like watching with him today so I went to watch in his mom's room. I put the TV on low so I could hear if anyone was coming. After watching for about five minutes I couldn't get too hard. Then I had an idea, I went over to her panties drawer and took out a couple of her panties. I had taken out her panties before but never for this reason. I whipped out my dick and wrapped her panties on my dick and started to masturbate. After about eight seconds I let go of the biggest load of my life. It felt so good.
So I put them back in her drawer and closed it up. I was still extremly horny at this point, so I decided to do the same on a couple of her bra's. After finishing up I put them away and went back into my friends room. I never told anyone about this but it feels great to.