I was in this multi way limped pot with 77. Action got to the river and the front door diamond flush came. I had an overcard to my 77s on the board and the person who bet the turn checked the river.... it was heads up now. So I decided to bet the diamonds because my play so far looked like a diamond and it seemed he had the over card as a pair.
So the guy went into a speech about how he thought I was bluffing. By the end of his 75s speech I realized he didnt have the 9 but he had the 6 that was on the board. So I threw him a reverse tell and he called with the worst hand.
Never had a hand I was bluffing with turn into a value hand DURING THE HAND. Man was he pissed.