Top Definition
a fat person who is no stranger to the buffet car. Should wear a t-shirt that says "I will only get out of my chair for food". Someone so fat they have their own post/zip code.
a: "Shall we go to the shop get some lunch?"

b: "Suppose we better ask the Buffet Monster if it wants any more whole chickens to chew?"
by SomeRandomBloke August 19, 2009
5 Words related to Buffet Monster

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