My favorite karaoke bar closed. After the masses left on the last day, anyone who'd ever been regular enough for the owner to recognize got locked in for a private party. We dismantled the place and sang. Pretty soon all the guys were naked or in their undies. They really wanted the girls to join in the fun, but I was the only one willing. I performed topless fornone song. It was fun.
I go to nude beaches. Actually, I'm naked in public a lot.
Other than that, no.