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A joke that is composed of either an incredibly bad pun or a play on words. Named after the comical styling of David Chin of San Mateo.
ex. of a Kaj Joke-

Person 1: Ugh, I need a tissue. Does anybody have one?

Person 2: Who Nose??

Note that "nose" and "knows" are the words being emphasized as being the two interchangeable words, creating a hilariously bad joke.
by Kyng December 25, 2007
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