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One who "breaks" or kills jokes.

One who takes all of the fun out a good joke.
Charles: HAHAHA that was a good joke John
Paul: OMG BE QUIET GUYS, WE'RE IN A LIBRARY......IM A JOKESBREAKER.
by Wrecklesguy June 02, 2009
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Apr 28 Word of the Day
Literally everyone, ever. Including the writer of this definition.
by masokitsune January 17, 2019
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