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1 definition by Liad Janes

 
1.
a combination of the words "Jackass", "Muppet" and "Gimp", used as an insult. Created when one man thought that the three seperate insults did not do enough damage by themselves.
"Hey, i just managed to get a fork stuck in the toaster..."
"Goddamit you're a jackmump..."
by Liad Janes October 29, 2008