[Gimpy]

Showing your hand in this situation and not showing your hand in other situations? If you are always right with every opponent you might gain a slight edge. I think there are other things more important to think about during a game. I never show my hand unless I have to. If I want to give an opponent miss-information I prefer to give it verbally.

This is one of many that work for me:

Head up, I make a big bet on the river. Opponent thinks for a while and then folds.

Opponent then asks, "Did you have the Jack (or some other card that makes the nuts)?

Gimpy with complete confidence as he stacks his chips, "It doesn't matter what I had. If I had 72o/s I still would have won that hand."

Opponent, "How so?"

Gimpy, "I knew you couldn't call."

Opponent, "How would you know that?"

Gimpy, "You have a tell."

Opponent, “What tell ?!!!!”

You can see the wheels turning in their head.