1. A fuckface who works at McDonalds.
2. Any fuckface to whom one wants to talk down.
3. Phony last name used to replace someone's last name that begins with Mc-.
4. Jesus' dick, which feels better in the butt than in your mouth.
1. Guy: That McFuckface didn't give me any fries.
2. Guy: Excuse me, McFuckface, was I talking to you?
3. Guy 1: Hey, here comes Jim McFuckface!
Guy 2: Come on, man. His name's Jim McPeters.
4. Guy: I told you, put McFuckface in my ass! That's where it belongs!
Jesus: Fuck you! It's going in the mouth!