I'm a straight male, but a little bit curious. I'd watch you masturbate. It would be hot to watch another man getting himself off. I might even pull my own cock out and stroke it. I'm sure I'd be turned on by watching you. It just sounds interesting to me.
I'm sure at some point, someone saw you strolling the street late at night.
I did the same thing in my neighborhood around 2 in the morning. Nervous and excited, after have a few beers i ran around my neighborhood totally naked. It was such a thrill. At one of my homes, we lived on a main road with a 4 foot wooden fence. One night I went outside naked and I was jerking off as the cars were driving by. It didn't take long before I started coming on the fence. The next day I saw the stain on the fence. Oops