Showing or telling anything about your hand after you have folded is not only bad etiquette, but it will get you in trouble at many rooms. As far as retrieving mucked cards, where in the hell do you play? If you dont get kicked out of the room by the staff, you might get worse done outside by the players. Or do you mean is the reaction from other players - i.e. kicking the ass of an idiot who tries to get his mucked cards back cause he likes the flop, fair to the players trying to concentrate??