What were you doing at the time? Something that might have caused a certain friction that you didn't quite recognize as anything other than "good feelings" until it was past the point of no return?

I dated a girl who could have orgasms while riding on a motorcycle. The first time it happened, she said it kind of snuck up on her and she just went with it when she realized what was happening. Of course, she was on the back holding onto (actually squeezing kind of hard) me comfortably and not driving.

She really liked going riding after that .