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1. (noun) Main rapper of the South Korean boy group Golden Child. (Lee Jang-Jun)
2. (noun) A very loud and extra person who everyone pretends to hate but secretly loves.
3. (verb) To bother, annoy, or generally be a nuisance.
"What did Jangjun do this time?"
"Man, that guy is such a Jangjun."

"I'm busy, go Jangjun someone else."
by jangjoos February 10, 2018
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