piss out one's ass

== English == === Alternative forms === piss out of one's ass === Etymology === The watery form of the fecal matter and fluid feel of the bowel movements is likened to urination in this phrase. === Pronunciation === === Verb === piss out one's ass (third-person singular simple present pisses out one's ass, present participle pissing out one's ass, simple past and past participle pissed out one's ass) (vulgar, colloquial) To have severe diarrhea.