Cool thread,
I had this girlfriend when I was in my early 20's who loved to be situations where she could get caught, One night we took a blanket and made out onthe courthouse lawn of the town we lived in, I thought that was all we were going to do, but before i Knew it she had me out and was riding me CG, of course it was such a turn on that it was almost an Instant O for both of us.
That same summer we were at the local beach, it was ealry evening and there were still a few people, we went into the water under the dock and while people walked over top of us I banged her up against one of the pilings, ...
But Like others have stated, I didn't really like her, the sex was amazing, but she was annoying as all get out! so it was a summer fling that never went anywhere.
My current wife and I once stopped at the Coquihalla toll booths in the middle of the night ( They had already been closed at this point ), parked on the side of the road and had sex onthe hood of the car...