I was playing Texas Hold Em' in a bar once, when this happened. I was dealt pocket Kings. Pre-flop, somehow I ended up all in after many bets and raises and so was another guy, and a third person had enough money to cover both of us. The other guy had pocket queens and the other guy had king queen of clubs. The flop came ace, king, queen, in some order. At this point I figured I had the pot won, but then all of a sudden the turn came the jack of clubs, giving the other guy a straight flush draw. I was in a situation now where I had to avoid all clubs, or a ten would be a split pot, as long as it wasn't a club. I bet you can guess what the last card was, another club, thus giving him a flush ace high which beat both of our three of a kinds.