on the wall of an airplane toilet though the most obscure place really is oddly probably just into the garden. ever jacked off while standing naked in your garden?
in a portable toilet. nasty but some time you just have to rub one out. I love to play with my-self in the woods.
I've tried jerking one of these, with a condom on.... What happened was that I stretched the condom (which was, along with my dick, inside it) about a meter away from me, making it feel like someone was sucking me.. It was really great.... But because I had oil all over my hands, I lost the grip, and it smacked my penis like a fucking whip! One of the most painful and unpleasent experiences in my life. It was red like a lobster for over an hour!