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1. A complete idiot, e.g. fuckwit or asshat. 2. A human being, either male or female, with the comparative mental intelligence of a slug (also, retard).
Richard, you're a shitwit.
by Salathiel July 20, 2006
From the makers of shit-for-brains and nitwit comes... SHITWIT!
"f0k u shitwit."
"...get a life, dude."
"no, shitwit."
"whatever, loser."
by wysiwyg January 12, 2004