Fat Guy Game Share definition Flag when a fat guy has to be extra nice to get near a girl. He brings out the fat guy game to try to make up for his ugliness and fatness. vital brought on the fat guy game to get the chick to go out with him. Fat Guy Game by eij January 13, 2008 0 0 Get merch Get the Fat Guy Game mug. Buy Now — $32.95 See more merch