Top Definition
When you're pooping for countless periods of time, normally over 30 minutes

All-Day Diarrea
-Yo what you doing tonight?
-Nothing, I'm in the middle of a Poop marathon
-Impressive how long so far?
-2 hours, and only half way done!

-Yo man you ok?
-Nah, i've been struggling with explosive poop marathon all day
-Man, that sucks!
by seniorpoopypants February 19, 2009

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