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Someone who is acting like a jerk–– used in more playful terms than to truly insult the jerk-like character.

Can also be used for other adjectives: (DORKfish, LAMEfish, MEANfish, etc.)
JoeBobSmith was poking fun at my pwned state, so I said he was a jerkfish.
by HalfRainbow February 05, 2008
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Jerkfish is a fabled aquatic creature that eats lures but has never been caught
Jerkfish must be living in this lake; I wasted all my lures but caught nothing.
by workinghettorix October 20, 2009
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