We all know one. It’s the person who is forever the three-year-old because everything is about ego. They’re always chanting, “Me, me, me.” The narcissist is unwilling to see other’s point of view because theirs is the only one they see, I mean come on they have Smurf named Vanity who’s base on Narcissus (Greek Myth). Extremely argumentative, they will talk over you or continuously make comments, interrupting you as you’re speaking.