Top Definition
Post Shit Fart(s) or PSF syndrome

after taking an exceptionally large shit, the series of farts that come afterwords to really clear the bowels out.
Johnny:"Damn why do you keep farting?! you just took a huge dump!!"

Joey:"Dude im having a Post Shit Fart(PSF) attack right now, my body is just making sure theres nothing left in there."
by johnsonlightmeup October 04, 2009
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