1 definition by Mr. Showtime

A man who has far too much skill at a physical activity and/or moves way too fast for a man of his size.
290 lbs. men like pro wrestler Samoa Joe should never jump from the top rope, but Joe does because he's got Fat Guy Game.

Nick moves fast for a fat man, so clearly he has Fat Guy Game.
by Mr. Showtime October 15, 2006
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