NHL Playoffs 2011, Coyotes Vs. Red Wings: Mike Modano Scratched, Henrik Zetterberg Out In Game 1

It’s against the rules for fans to throw objects on the ice. That’s a wide ranging definition of “objects,” from beer cups to plastic rats -- in fact, it’s pretty much anything that’s not a hat after a player’s third goal. Here’s how the NHL puts it:

And yes, that does include rubber snakes. But for two wacky weeks a year ago, the magical interwebs were abuzz with the Throw The Snake movement.