In the early 1990s, I lived in a first-floor apartment in San Francisco. It had a large deck in the back and right behind it was a two-story apartment building. There were a couple of guys that lived in the apartment behind and I occasionally saw one of them walking around in underwear. I assumed they were gay.

I'd had exhibitionist tendencies for a long time and I was turned on by showing off here. I had two roommates, so I had to be careful. Saturday mornings seemed to be good as my roommates were often gone and my neighbor was around.

I looked for opportunities. One day, I saw him in his kitchen, which had a direct sight line of our deck and down into our back windows. I stripped to my briefs and stood in the back window. The sun was streaming in, so he had a good view. I saw that I caught his eye but pretended not to notice him watching. He started peering from around the curtain.

I rubbed my cock through my briefs, getting a nice bulge. I walked away from the window and came back. He was still there. This time, I reached inside my underwear and played with my cock for about thirty seconds. Then I turned around and, still right in the window, pulled off my briefs and walked away.

My heart was really pounding with excitement now. Would I have the courage to go stand there totally naked and jack off? I couldn't stop myself. I walked back to the sun-drenched window. He was still looking. And I stood there naked and jacking my cock, turning to the side so he could see the whole length. I loved having him watching my naked body - being on display like that.

I was about to cum, so I lay down on the floor in the patch of bright sun and shot a huge load on my stomach. As I scrambled up, I could see him still peeking - he'd watched the whole thing!

I did this a couple more times for him and I always came hard. Once in a while, I'd see him on the commuter bus downtown on a weekday morning. We never spoke or really acknowledged each other, but I hope he was riding along thinking about my naked body and me jacking my hard cock for him.