Hmm eh.. Well, when I was in 5th grade or so, we went to a night trip to a some old mansion. When boys had their sauna turn, we went for a traditional snow-swimming (when you run staright out from sauna and jump into snow) and I was the first one to run. Well, when I jumped from the door with couple of my friends (rest of the boys weren't at the door yet) to the snow, I heard manic giggle and I glanced behind me. Up there at the first floor (the sauna was in a basement) all the girls of our class stood at the window and watched us doing snow dipping naked. and THAT was embarrassing.