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A member of the military who is clearly too fat for effective performance. Originating from Stanley Kubric's "Full Metal Jacket".
"Are you allowed to eat jelly doughnuts, Private Pyle?"
"Sir, no sir!"
"And why not, Private Pyle?"
"Sir, because I'm too heavy, sir!"
"Because you are a disgusting fatbody, Private Pyle!"
by Lycomedes December 09, 2008