noun - a person whose behavior is so completely and utterly atrocious that the only explanation is that the person has an ass for a face and as such must live up (or down as it were) to the face.
Those insane extremists who blame disastrous, natural phenomena on God punishing, the gay community, the historical slave owners, and the all encompassing "sinners". Those people? Assfaces.
by Soobee September 06, 2005
An individual who just happens to be in the unique position of having his face look identical to his ass. In most cases, the face takes on the role of the ass and vice-versa. So, it is not uncommon for an assface to have bad breath and to talk a lot of shit.
He's such an assface - have you heard the shit that comes out of his mouth?
by DrDeadpan September 08, 2009