Definition of shit-faced:
(n) :
(countable, uncountable, colloquial, literally) Usually solid excretory product evacuated from the bowels; feces.
(n) :
(countable, informal, colloquial, literally) The act of shitting.
(v) :
(intransitive, literally) To defecate.
(v) :
(transitive, literally) To excrete (something) through the anus.
(v) :
(transitive, reflexive, literally) To defecate on; to soil through defecating.
(n) :
(uncountable, colloquial) Rubbish; worthless matter.