I recommend the waterfall sex, too (make sure you pee lots beforehand for those people with teeny bladders)!

I groped in a Cessna before motion sickness got the better of me.

I had sex in a library study room (the kind with BIG windows in the front) & in the library stairwell. We figured we were pretty safe because most people would take the elevator instead of walking the five flights.

My most recent public (I don't really think it strange) sex was in a fairly busy park. The only thing separating us from the crowd was the big tree I was leaning against.

What's up with all you pervs and police cars? How did you manage that? Were you doing an officer?