talk through your hat
成語所屬單字hat
talk through your hat — 慣用語
1. to talk confidently about a subject that you know very little about, saying thin
1.慣用語
釋義
胡說八道；信口開河
to talk confidently about a subject that you know very little about, saying things that are not true or sensible.
例句
The reporter was talking through her hat when she claimed the school was closing down.
Don't listen to him about car engines — he's talking through his hat.