v. to mangle someone's face in such a way that they look like a retard.
I'm going to tardface you if you don't shut your hole.
2. To be similar to Amy Winehouse
Andy: Who the "Tard Face"
Alex: Yea thats all you
Andy: Pssh I wouldn"t touch that with a 10 foot pole
Alex: Yea your right. she wouldn't let you butt nugget