Top Definition
When you are the buzzkill of the party - taken from the character Karl from the show "An Idiot Abroad."

Also a curmudgeon.
Ex:

David - "Let's go steal some Christmas lights."

Dorothy - " I don't want to. I don't like jail. It's illegal. I have a mortgage."

David - "You are acting a Karl in what could possibly be a fun situation."
by Sydney Coles March 04, 2012

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