HABS fan
A person who only knows how to cheer for a hockey team in Montreal. They shout '24 cups' like it's the only thing that matters. They don't know anything else, and they don't care.
At the bar, a HABS fan yelled '24 cups!' so loud the bartender spilled my beer.
My neighbor's dog started barking every time a HABS fan said '24 cups.'
A HABS fan tried to explain the game to my mom, and she just said '24 cups?' and left.