The date was December 23, 2003 and the Islanders thought it would be a nice idea to invite fans to come to that night's game dressed as Santa. Anyone who did so would be allowed to attend the game for free. The team expected only a few hundred people to take part, but, according to the Associated Press, about 1,000 Santas showed up.
They were allowed to parade around the ice during the first intermission and all was going well. That was until one Santa took off his red jacket to reveal a New York Ranger Jersey.