I really wish I could remember how old I was at the time this happened but I can only guess. Plus this happened more than 40 years ago so there's not much detail.
I think we were maybe in seventh grade. It was summertime and must have been pretty hot as we went to bed wearing just our undershorts and nothing else. Usually I would sleep in my flannel sleeping bag but this time we got in his bed between the cool white sheets.
My friend Kurt asked me if I knew anything about sex or how babies were made and I really didn't know anything about that and said so. So then he asked if I was curious about it and I was so we took off our underwear and laid side by side. he told me what he knew about sex and made a suggestion about what to do next.
He was on his back and I got on top of him. We both had a hardon. All we did was rub our dicks together simulating a man and woman screwing. It felt good to me and I liked it. Neither of us came and aside from this one time we never did anything sexual together again.
It may sound silly to your readers but I wish we had gone further that night. Kurt was skinny but had a nice build. Sometimes when I jack off I remember that night so long ago and it makes me smile.