High school marching band competitions were always better if you had a girlfriend at the time, and my sophomore year was no different.
Thousands of people in the stadium from dozens of bands and all the staff and families. Shows going on the field almost constantly, but when you aren't playing, you mostly sit in the stands and talk with friends. It was late fall at this one so it was chilly and windy and lots of people had blankets. My girlfriend and I were sitting on the top row of the concrete bleachers with a bunch of friends from the band and had a blanket over us to protect from the cold wind.
It also gave us an excuse to play around with each other since nobody could see. My jeans were unzipped and she had her left hand inside my jeans and boxers, wrapped around my hard teenage cock, slowly stroking it up and down inside my pants. I had her jeans unbuttoned and unzipped, pushed down slightly, with my right hand down her pants, her panties pushed to the side and my fingers alternately rubbing her clit or dipping slightly into her wet pussy, but I couldn't get in too far with her jeans still on.
Nobody could see what we were doing, and we tried to talk and pretend like nothing was going on while each of us got hornier and hornier and closer and closer. Eventually I couldn't stand it any more and felt the sensation build in my balls. I whispered in her ear what was about to happen and she giggled and sped up a little, pushing me over the edge. My muscles tightened, my cock pulsed, and large squirts of cum flooded my boxers, pooling just above my pubic hair, covering her fingers, and dripping down my crotch around my balls.
I redoubled my efforts on her clit and in another minute she whispered in my ear that it was time and I felt her thighs squeeze tight against my hand, she gasped slightly, and I felt her crotch muscles pulse in ryhthm with her orgrasm. I held my fingers inside her pussy as deep as I could get them and felt her get so wet it almost felt like she had peed her panties. I was totally hot and got me hard again, so we both kept going, we had time! It took awhile, but eventually I did have another orgasm. I didn't cum as much the second time because the first load had been so big, only a few smaller squirts shot out into my pants this time. She also came again right after I did, because she said my cumming again turned her on so much.
We zipped back up and wiped off our sticky hands as best we could, and snuggled up together to keep warm, except for our cum soaked pants which felt more cold than anything.