[The_Missile]

When a few of us play, although clearly not in a true B&M setting, we use "flipping for reaction all the time" where the player who is potentially calling an all-in flips over his hand to see for a reaction. We've once had a player turn over his hand even though the potentiall caller clearly stated he was not mucking, and we allowed the player who flipped for a reaction to take down the pot seeing that he had won.