I attended summer camp one year when I was 14 or 15. It was an all-boys military style camp although the girls had their own camp in another area of the grounds. On Sunday afternoons, we could all get together in a large park area at a nearby lake. We generally went swimming and laid on the beach. When boys lay on their tummies at that age, their cocks usually get hard. The girls, of course, were on to us and always looked for the bulging bathing suits as soon as you got up. We knew that they knew.
One Sunday afternoon, after having a swim, a pretty camp girl, I think her name was Jan, whom I had met a few times and I where lying around talking in a secluded tree area of the park. We were talking about other guys and girls when she laughingly asked why boys cocks grew so much when they were lying on them. Trying to explain this occurrence was difficult as really no sex was involved, it just happened I told her.
Then she bravely asked if she could see my cock as she had never seen one before. After swearing to secrecy and making sure no one could see us, I agreed, but only after negotiating that she had to show me her tits. She proudly lifted her top to reveal two beautiful soft white mounds with little pink nipples. I was overwhelmed by this sight as I pulled down my bathing suit as agreed to show her my cock which was quite limp. The girl was very curious and took a good close look as I slowly pulled my foreskin back and forth. Soon I had a nice hard on from this exhibitionism and was turned on ready for sex. Pre cum started flowing and the girl blurted out, 'are you going off?' I explained what was happening. She coaxed me into continuing jacking and I agreed only if she would show me her pussy. She quickly pulled her bottom down to her knees to reveal a beautiful reddish brown hairy pussy. A few minutes later I spurted my cum and the girl was totally thrilled. We pulled on our bathing suits and laid there in silence for a few minutes when she confessed that she was a virgin and had been masturbating for several years and would do so when she got back to camp as she was turned on from what she had just seen.
The camp was over the following week and I never got to see Jan again (I never knew her last name). I still jackoff remembering that time when I first saw real tits and pussy. What a beautiful sight, what a beautiful memory.