My first masturbatory experience almost became my last. I had liked this girl (who I'll call Julia to protect her) for some time during the second grade. She was a cute blonde with green eyes and very sexual (probably abused now that I think about it).
Anyways, she was always getting hauled into the prinicipals office for kissing the boys on the playground, dry humping the pole on the playground or masturbating during quiet reading.
I was quite enamored with her and we started a romance and would find a quiet spot to kiss during recess. Well, one day after school she said come with me or I'll kick you in the crotch in front of everyone tomorrow. Naturally, I didn't want that to happen.
So, I came with her to the water toy room (large room also had a large walk-in closet that was off-limits to us) we started playing with the water toys and then she shoved me into the closest. We started kissing and then she began to take her pants and panties off, she instructed me to touch her vagina and she touched and rubbed my penis. Where she learned this I'll never know.
It probably would have progressed further except for one minor embarassing detail. Our parents reported us missing and the police dept. began sweeping the school looking for us. Just before they went ahead with notifying TV and radio some genious figured out boy/girl walk-in closest likely make-out session. Yupp, we were caught (luckily fully clothed) in said closet by angry parents, cops and teachers.
She moved away that summer, I only saw her once after that bumping into her when our schools were at a concert hall. I got an all knowing smile and that's the last I saw her 15 years ago.
FYI: I didn't dare touch my penis again until sex-ed class taught me it was normal when I was 12.