Being watched by others
A real turn on a while back asking a guy on the nude beach to take some pics. I didnt know this guy and while he took the pics I started to get hard knowing he was looking at be nude. I fought from getting a full erection but did get a semi, sure he noticed. Later had a good jack off session recalling that moment.
As naturist I agree there is a little bit of exhibitionism in all of us, (some more than others), hehe
I do feel good if people are looking or watching me whilst naked, and sometimes I do get aroused, and if the watchers get aroused it only shows appreciation of the naked body.
It's a big turn on to see men or women play with themselves regardless of what is turning them on. If it's me they're watching all the better. Seeing another guy with an erection and cumming is beautiful, especially if it's slow. It's a shame that there aren't more areas where guys can meet for their mutual enjoyment without facing prosecution.
It is a re-assuring feeling to be watched by others. Had that experience this week at the beach. It made me feel like the effort I put into exercise and eating well, working on the tan and my skin may be paying off.
Had a few good experiences in the last year or so after I made more of an effort.