I folded a nice Ace high Flush the other day, certain the Villian had a Full House due to the board and his out of character aggressive re-raising on top of re-raising. So of course he turns over nothing but air, not even a pair nor did he have any potential pre & post flop to make any hand besides a pair or two. I was so pissed.
I at least got to LOL when I took him out the game about 10 hands later!