A term used by Russel Peters in one of his famous and awesomest comedy acts. It is the face made while fucking (having sexual intercourse) not to be confused with cumface.
Bill:Hey fuckface!!!!
Taylor:I'm not fucking what are you talking about?
Bill:that's what your face looks like dipshit!!
Taylor: I don't dip my shit in anything but coffee
Bill:Fuck you Cumface!!
1) One who has caveman attributes; brow, jutted jaw
2) Characterized as one that lacks beauty
3) One's description after oral sexual activity
4) (see "shitstain" definition)