Top Definition
When, on a particularly humid day, one tries to fart but a residual clot of defecation emerges from the anus with said gas as an aerosol.
I was sitting in class and I tried to slip one out. I thought it was just gas but I should have known it was a farpoo in disguise. I've been spending the last ten minutes wiping mud out of my slacks
by Poopy Bandit September 09, 2010
4 Words related to farpoo

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