1. An unfathomable moron
The word JackMonkey was origonally a derivative of "jack off" that was created in a moment of absolute frustration. The defining factor of a JackMonkey is their inability to grasp even the simplest concepts that are new to them.
I tried to teach that JackMonkey to tie his shoes but all he managed to do was get his fingers stuck in knots.
by JM Delif May 6, 2007
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A derogatory term describing any individual who is acting in an unintelligent manner.

The combination of "jackass" and "monkey".
Man, can you believe that jackmonkey just cut me off?!
by Jx2 May 9, 2005
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Some ass that monkeys in your business and tells you some jacked-up story just to jerk you around and stoke you.
That jackmonkey left without paying for his groceries.
by Corri Deegan March 9, 2006
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