know onions

know your onions

(British & Australian humorous)

to know a lot about a particular subject That car salesman certainly knew his onions, didn't he?

Name	Pronounced	Usage
CaitrÌOna	-	Scottish
Tenskwatawa	-	Native American, Shawnee
JoŽIca	-	Slovene, Croatian
Warrick	WAWR-ik, WAHR-ik	English (Rare)
Micheline	-	French
Corine	kə-REEN	English