Back of a Limo in NY (twice. Worry about the driver sometimes lol) and in a glass elevator. (fortunately high enough to keep us from getting arrested). Same provider btw.
Actually it was at a bar in Las Vegas. A working gal was trying to sell me her services. Her close was the best I ever heard. After starting at 1K and working down to 300. she asked me if I liked anal sex? What a close
Garden State Parkway NORTH bound past three tolls 1:30 am on several occasions. Come to think of it, that was an ex-girlfriend but she did "provide" for me. And these days I do consider her a @$#@@# so in my mind she qualifies.
Back in high school. I was doing my girlfriend at the time from behind in the auditorium's lighting booth. During a school assembly. The topic of the assembly? Safe sex.