When your cat gets up in your face, demands attention and you pet the beast face to face; then the cat decides to turn around to see the rest of the room and ASS FACES you by sticking its browneye in your face.
The cat jumped up on my chest and then ASS FACED me!
by Beminen June 19, 2009
The act of sniping an opponent in the face while they are running toward you. They must be killed in one shot. Achieved most notably in the game of Halo 2.
Dude, I just assfaced this guy! I need more ammo!
by J_Cool November 14, 2006