I can understand doing it in *semi-public places, like the back of a dark empty movie theater or bathroom.. but would you do it in all out "anyone can see me" places like the beach or middle of a street?
I really am curious because I've always had problems in a car on a crowded highway and the like.
The craziest I ever did was my front yard on the lawn (right by a major highway) but it was like 11pm lol and I was more freaked out than turned on