Today I was in a local store browsing through the lingerie area. I noticed that the check out stand was unattended and that I was pretty much alone, except for a young girl of 17 or 18 who was looking at bras. I was behind a rack of panties when I noticed her, but she was unaware of me. As she looked through the bras I could not help looking at her, as she was wearing a short mini skirt and a tank top that you could see her bra underneath. She was wearing a purple satin bra and I would guess she was a C cup.
I felt myself getting aroused and as I did not see any cameras in the area I figured what the heck. I moved so that the panty rack blocked my lower body, where there was a pair of pink satin string bikini panties hanging at cock high. As I watched her I unzipped my pants and pulled my cock out. I moved closer to the panties and started to rub my cock on them as I continued watching her.
I used my right hand to stroke with and my left hand to act like I was sorting through the panties. I was now completely jacking off with the panties, wishing I could show her. She turned around and saw me standing behind the rack, but did not notice my hand furiously pumping my cock. She seemed surprised to see a man looking at women's panties and just stared. That is when I shot a huge load into the panties I was jacking off with. She turned and walked away, so I quickly left the store.