What has two thumbs and is heading to the airport for Game 1 of the Stanley Cup Finals? This guy.
Goal horns are common in North American hockey stadiums.** The tradition arises from the fact that early 20th Century refrigeration technology required phenomenal amounts of water to maintain an ice surface, so arenas were located on lakes or rivers. With each home team goal, ships passing or docked nearby would blow their foghorns. Fans got accustomed to it so when the technology improved and stadiums moved inland, they brought the horns with them.
Now that is a Random Fact of No Particular Relevancetm.
**(Note: some inferior teams made up of little bitches, such as the Philadelphia Flyers, substitute a train horn or worse. For shame.)