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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.
"Oh wow, I can feel it, it's almost poo-thirty", or, "What time is it?'s almost poo-thirty".
by Luke Sinak May 02, 2008
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The vengeful act of crapping on a lover's chest while they sleep.

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the time of day when one has to take his/her daily dump. usually after eating some sort of Mexican food.
Wow, its already poo thirty for me. That doesnt usually happen until later.
by samsonite56 October 28, 2010
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