be talking through hat

be talking through your hat

(old-fashioned, informal)

to be talking about a subject as if you know a lot about it when in fact you know very little The man's talking through his hat. He doesn't know the first thing about banking.

Common Names:

Name	Pronounced	Usage
Siemowit	-	Polish (Archaic)
Harding	['ha:diŋ]
Beach	[bi:tʃ]
TomÁS	to-MAHS (Spanish), too-MASH (Portuguese)	Spanish, Portuguese, Irish
Chifuniro	-	Southern African, Chewa
Jacob	['dʒeikəb]