Biholar
Someone that pretends not to know about how they cheated on their significant other. This is the dumb strategy of when your bf/gf confronts you for cheating.
Guy: Bill told me that he saw you cheating on me!
Girl: What the fuck? I don't even know what you're talking about!
Guy: Bill saw you. Are you dumb or biholar?
Girl: What the fuck? I don't even know what you're talking about!
Guy: Bill saw you. Are you dumb or biholar?