This happened towards the end of a home game last week. I"d be interested to know what the ruling would or should have been had it happened during a live tournament in a casino and the floor had been called in these circumstances....
A player with a 12K stack limps for 1600 chips in early position, I shove my 14K with KK on the button and then the BB also shoves his last 7K. The action folds around to the limper.
Whilst the limper is pondering, the BB lifts up the corners of his cards and shows his AA to other players at the table. The limper who is still to act, catches sight of the hand and promptly mucks his cards, thereby denying me a potential side pot.
You are the floor, I"m absolutely furious - what now ?