More times than I care to remember!! For a dare...... in a naturist spa.....skinnydipping......at a sex party.....you name it! The only time I have ever felt uncomfortable being the only naked person in a room with clothed people was a couple of years ago when I was due to have abdominal surgery. the consultant wanted to examine me (I had to remove the hospital gown) THEN asked me if i objected to a group of medical students being present! I could hardly say no, but when each student took it in turn to observe my posterior vaginal wall prolapse as the consultant got me to bear down to make the prolapse more visible I did rather blush!!