Best sex you ever had
I would say the best I've ever had was with my wife, from behind, against a fallen tree in the forest...a place called Mount Compass.
We had gone up there just for a bit of a bushwalk, and there were quite a few people doing the same trek, but we both just got the strongest urge and disappeared 20 meters off of the track and went for it.
If anybody had come walking by, they would probably have busted us, we thought we had hidden ourselves quite well but when we returned to the track we looked back and could the spot we were very, very easily. I think that might have added to the thrill.
Sex in beautiful nature feels very right. There is nothing more natural in the world in my opinion, and that made this fling probably my best.