My story happened when I was a freshman in highschool. We had a coed cheerleading squad.
Our coach announced that there was going to be a competition to see which male/female pair would represent the team at some trick meets vs. other schools.
My partner Matt and I did well but had not won any part so when we came to the final opportunity, I was determined to do my best. The last contest was to see which male could hold their partner over their head with only one hand. When Matt lifted me his hand slipped under my panties and he was actually cupping me. The longer I was up the tighter his grip became until his fingers were actually stimulating me. I was about to burst and could tell how wet I was becoming! Then it actually happened, my body shook and I orgasmed for all to see. I fell to the ground and noticed two things... we had won and were getting an ovation, but also my juices were all over Matt's hand and arm.
From then on I had the nickname 'O'.
I'll share more stories later :)