Where does ‘talking through your hat’ come from?
I’ve looked it up on phrases.org.uk, which gives the following quote as the first usage: This began life in the USA, in the late 19th century, with a slightly different meaning from the present one. It then meant to bluster. Farmer and Henley Slang and Its Analogues, 1888: “Dis is only a bluff dey’re makin’ … Read more