Had several-
1) bathrooms at bars (once while the girl's boyfriend was drinking at the bar)
2) fitting room at the mall
3) on the ground floor porch of my ex's apartment in daylight, no fence or anything
4) the hood of a car
other weird places but pretty normal such as backseats of cars, strangers beds at parties (knew the girl, but not who was having the party) I've had many many bathroom encounters. I know they're nasty but they're just so damn convenient!
My best friend and his girl got caught having sex on their neighbor's trampoline at 3 in the morning. The guy turned on the porch light and yelled at them, so they grabbed their shit and ran and my boy left his watch there. It was a Movado so he went back the next day and asked for it back.