an icemaster occurs most often in hotel rooms, lobbies, etc. A bucket of ice is thrown into someone's face. Side effects of an icemastering include ice chips scattered across the room and being thrown out of the lobby of a very nice hotel.
Person 1: "Hey! You know what?"
Person 2: *looks at person one*
Person 1: *throws bucket of ice in face of Person 2*
-a 6'10" ripped hotel security guard shows up at 3am to tell a group of guys to quiet down and escort them to their room.