One time a few years ago I was having fun in the woods at Eversley (Hampshire - uk) and we were in a clearing both naked, but a long way from any paths.
Close to this wooded area is a small airport called Blackbushe (
http://www.blackbusheairport.co.uk/) so light aircraft take off from here.
One took off - low and did circle us clearly having a good look. I made best efforts to cover the girl with my body.
Attached is a pic of the girl on
one of these occasions - she didn't want her pic taken, and she has a lovely back I think.