Ok, here's another story of something that happenned to me a few years ago, I hope you enjoy it.
Where I used to work, we had a small gym on site for employees to use, I guess the company figured that fit employees took less time off sick, anyway...One evening after finishing in the office I went down for a bit of a workout to get rid of some of the stresses of the day. I'd been working out for about 40 minutes or so, and was coming to the end of my routine by doing some sit-ups with one of those machines for working out your abs.
As I was doing the rocking backwards and forwards motion, I started
to get that familiar feeling 'down below' as if I was touching myself but my hands were firmly on the machine! As there were other people in the gym there was nothing at all that I could do to 'adjust myself' as my my knickers were obviously a bit sweaty and were rubbing against my clit as I was doing the sit ups, anyway I was enjoying the feeling too much! So I carried on working out on the machine, I could feel the tingling get more intense and then all of a sudden my orgasm just built and exploded while I was there working out on the mat. Luckily, being in the gym people expect you to look hot/sweaty and flustered so nobody was at all suspicious of what had just happened to me! I did have to make a hasty exit though as my knickers and shorts were clearly a bit damp, as was the mat I was working out on!
Strangely enough, that was the only time that has ever happened to me, and believe me I've tried to recreate that scenario over and over again!
So next time you see a red faced, flustered looking girl in the gym you can imagine what she's just been doing....