the time of day when one has to take his/her daily dump. usually after eating some sort of Mexican food.
by samsonite56 October 28, 2010
Get the poo thirty mug.Any time during the day or night when one's body makes a strong suggestion for the owner of said body to engage in the act of fecal excretion; especially via the Anus.
by Luke Sinak May 2, 2008
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