a bald faced liar

The cliche a bald faced liar is a common term used when referring to someone who is a very good liar with lies that are hard to recognize. The term originated in the 18th century when businessmen would wear heavy facial hair to cover up their facial expressions while making business deals. Therefore, being a bald-faced liar, or a liar without facial hair, is someone who can lie convincingly without showing guilt on their face.