Having a chin structured from two horizontal segments, bearing a remarkable resemblance to an ass placed at the bottom of the face. The advantage of having an ass face is that one is able to blow one's nose and wipe one's ass simultaneously.
after many years of friendship i suddenly realised that Bell had an ass face.
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?