I was at the grocery store today and found myself behind a woman, about 25, in a pair of tight exercise shorts and a white t-shirt. She had brown hair pulled back in a pony tail, was about 5'5' and 130lbs.
I could see the outline of her bra through her shirt. She was wearing a purple bra that held c cup tits. I felt myself getting turned on.
I followed her in the store for about five minutes and when she was ready to check out I left my things and went out to my car. I watched for her to come out. As I was waiting I started to stroke my cock. I was getting hard and then she came out.
I pulled my car out into the lot and as she was loading her groceries I noticed an empty spot next to her car. I pulled in and parked. I was watching her load her stuff and I was jacking feverishly. She looked over a couple of times but did not notice what I was doing.
Then when she got in her car she looked over and saw me. She started to laugh and pointed at me. I came so hard it felt so good. I think she liked knowing that guys see her and get hard.