i have done it in numerous places such as elevators, storage closets, office desk, etc. But the one i remember always was when i went to see an apartment and the leasing agent took me to a model that was furnished. We get to the bedroom and we both looked at each other like.." Are you thinking what im thinking". Fucked her on the edge of the bed and as i was zipping my pants another agent walks in with another family showing the model. Good Times.
Macy's dressing room; not perhaps the weirdest but the most exciting. The weirdest, outside a TGI Friday's at night behind an electrical box that hardly did anything to conceal the activitiy
Backseat of an overnight charter troop plane, returning stateside from Vietnam. Most aboard were asleep somewhere over the Pacific. A 40ish flight attendent joined me in the rear seat under a blanket.
At night, in a glass display window of an old department store that had gone out of business years earlier. The entrance to the store was covered so it wasn't wide open to the street but you could hear people passing by.
Also, at a rest stop, in a bathroom stall of a men's restroom. Men were in and out of the restroom, just outside the stall, it made it even hotter knowing that, lol. Yep I have a voyeuristic side. ;-)
An abandoned building that the fire department used for training. When I would drive by it and see them training, I would laugh and hope they didn't slip on any wet spots lol.