1 definition by gabba gub

Top Definition
A mischievous act that is only completed once all members of a four memeber party succesfully perform upper deckers in four toilets of a household. Derived from the slang for shitting, "taking a number two."
Fredrick, Garth, & Juan knew they had completed a Four by two when they saw Keith come from the bathroom with a satisfied smile on his face.
by gabba gub November 17, 2009

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