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One who insists on carrying on with a funny concept, item, or subject to the point where it has lost all of its humorous qualities.
Nick: Dude, can you believe Julian? He's been rambling on about that punchline forever! I mean seriously, its not even funny anymore.
Courtland: I know! He's such a humor-hauler!
by XC Penguin August 07, 2010
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