After pouring a shot of liquor, one drinks straight from the bottle while leaving the full shot glass alone. The entire bottle need not be consumed in one gulp (this would be impossible for most people), but more liquor must be drunk from the bottle than is contained in the shot glass.
Named for the manner in which the cartoon character Garfield is seen eating cake on several occasions.
I poured out a shot of Jack, then totally
did a Garfield shot instead.