once hell freezes over

Never; at no time. Sure, Bob, you can be the head of this company—once hell freezes over!

Name	Pronounced	Usage
Anong	-	Thai
Appleton	['æpltən]
Basmat	-	Biblical Hebrew
Fawn	FAWN	English
Susanne	zoo-ZAH-nə (German), soo-SAN-ne (Danish)	German, Danish, Swedish, Norwegian
Bram	BRAHM	English, Dutch