At the vatican.
On a billboard sign (Well, the catwalk in front of the billboard) right next to a busy highway, 6 pm, on a Friday evening, June 1999. She was kind of an exhibitionist. Turns out I wasn't. :P
I'd have to say church (I've repented, hallelujer), smack dab in the back of my boyfriend's backyard on the lawn facing all of the neighbors, and hmmm....in the forest near a family that'd been out camping one night.
In the snow, middle of January on a private beach. :)