Heck, if it's not risky what's the turn on?? I can't begin to remember all the places I've rubbed one out. I guess wherever I happen to be when the urge hits me.
I'll send a body/cock shot to almost anyone that asks, but shots with face are reserved for special people....
I have done it while looking at pictures taken on certain occasions that have pics of others as well as me and we're all naked. She would have the camera for a while and then it would be my turn. We're mainly outside having fun and out comes the camera!!
I like to do it where I might get caught or be seen. Dressing rooms, parking lots, edge of the woods, at the lake, you get the idea.