Definition

Prison slang that's leaked into broader use, referring to an inmate who's mentally unstable or having a psychotic breakdown. The term comes from the 'J' classification code used in some correctional facilities to denote psychiatric cases. Now casually thrown around by people who've never seen the inside of a cell to describe any mental breakdown.

Example Usage

If I have to sit through one more of these meetings, I'm gonna go full j-cat.

Source: Urban Dictionary (https://www.urbandictionary.com/define.php?term=j-cat&defid=1699085)

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