It was an awakening
My regular buddy invited me over to his house for a swim. Usual summer activity around our neighborhood. We were about twelve.
After we had been swimming we peeled off our trunks and dried off. I didn't think anything of it until I noticed him looking at my crotch. He was hairless and I was just starting to sprout. We got dressed and kicked back to watch some TV. He was laying on the couch and suddenly said 'wanna see what my cousin showed me?.' I naturally said yes. He dropped his shorts and started stroking his five inch cut cock. It didn't look anything like mine! It was slimmer and it curved to the right. But I was captivated by what he was doing.
He closed his eyes and began tugging on his cock. After what seemed like a long time his body tightened up and he said it feels goooood. Right then some cream 'stuff' came out the end of his cock. I was amazed, intimidated, and curious. He asked me if I had ever done the same. I told him no.
I left shortly thereafter and went home. When I got home I stripped down and played with myself. Nothing much of note. But I was back the next day and asked him to show me again. He willingly obliged and that began a summer of much enlightenment and many experiments.