talk through one's hat

Idioms and Phrases

Talk nonsense; also, hold forth about something one knows very little about. For example, He was talking through his hat when he described the shipwreck , or Mother went on and on about various screwdrivers but in fact she was talking through her hat . The allusion in this idiom makes no sense either, which may be the point. [Late 1800s]

Related Words

• divulge
• tell on