A person who is both muscular and fat.
Woah, Tom needs to lay off the bacon - he's starting to look fatjacked!
by SuzanneG January 15, 2008
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a person who is just jacked up.. totally messed up
and the person is a fag because they are that.. messed up i guess
MAN.. HE JUST STOLE MY MUFCKIN PENCIL.. WHAT A FATJACK
by Kennth Amawa March 15, 2010
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Relating to losing or hijacking fat accumulating in the unwanted body parts such as belly fat, flabby chest, flabby thighs, drooping buttocks.
"this fatjacker will showcase your lean, mean 6 pack to kingdom come"
by chit-chat February 14, 2019
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