if you suffer from any form of constipation and you know you have to take a dump very soon, you're experiencing poop pressure.
Men 1: Dude, I can't come down to the bar right now. I haven't taken a dump in 5 days! I'm under serious "poop pressure" right now!

Men 2: Shit man, good luck! Get some plums.
by Tjupr November 26, 2013
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