hmm...most embarrassing moment...I guess mine would be when I split my pants (not only one time, but on 2 separate occassions) at the club I always go to. Needless to say I've pretty much stopped dancing the way I was when I split my pants both times. Good thing all the guys I hang out with there normally have 2 shirts on and were kind enough to let me borrow one of them to cover my exposed ass cheeks!
A lot of people would have been sorta devastated by that, but nope not me. I just laughed about it and made jokes along with everyone else. I don't embarrass too easily.