My first experiences showing off for my neighbour.
When I was 13 I would sometimes swim naked in our backyard pool when I was home alone. I loved the sense of freedom of the water against my naked body and we had a relatively secluded back yard which was fenced and above street level so privacy wasn't an issue, or so I thought, as despite one neighbour's house being above ours, there was a large bank with quite a few trees and bushes between our property's so I didn't think about being seen. Yet one day I caught the neighbour guy watching me naked out by the pool, he didn't know I had seen him but then I never let on that I knew. It was quite a shock at first to realise I had been caught, but at the same time such a turn on knowing an older guy (he was about 35) was interested in watching a young kid like me naked. I was a typical blond blue-eyed skinny kid at the time, around 5'4" and needless to say my hormones were running amok.
So as the next few weeks went on I started getting more daring by the pool, more often than not I would be able to see him watching me from his usual spot and one day in my extreme hormone-fuelled state I decided right then and there to put on a show for him, without him knowing I knew he was watching of course. I swam around and jumped on the pool surfboard naked and lay back on it with my hard dick standing straight up in the air. I then sat up out the water on the poolside totally nude and exposing myself towards where he was looking from the bushes and trees in his yard. I was so turned on I was shaking with excitement, I started jerking off slowly and got so hot and horny knowing he was watching me doing this forbidden (I thought) act, I knew I was going to cum soon and wanted to put on this extremely naughty show for him so much, all common sense had left my mind, and all my body and brain knew at that moment was this electricity coursing through my body from showing a grown man my most private secret act. I tensed my legs up out the water, jacked my cock furiously and had the best strongest orgasm of my young life as I shot cum up my chest and tummy, it was the most cum I had ever shot up to that day, it felt like I would never stop cumming. I hadn't planned on it but when I was done squirting I just looked toward him and smiled, and then got out and wrapped myself in a towel and went inside.
This first time started a regular thing of me going outside when I was home alone, sometimes swimming nude, sometimes just laying down on the pool lounger and stripping naked for him to watch me wank and shoot cum all over myself for him. I felt so powerful to have that kind of a sexual attraction over an adult and the orgasms were incredible, so much better than when I jerked off by myself. I was hooked and couldn't get enough.