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1.
one ugly mother fucker
what's up diarrhea face? ha ha ha ha
by Matt Petrie June 02, 2007
 
2.
noun:
for when calling a colleague poopface does not suffice

verb:
used as a threat
NOUN: "OMG I can't believe you said that. You are such a poopface"

"Yeah well you're a diarrheaface"

VERB: "Get out the way. Or Imma diarrhea on yo face"
by diarrheaface September 11, 2011