You had better believe it!

You (had) better believe it!

exclam. It is true without question! Yes, this is the best, and you had better believe it!

Name	Pronounced	Usage
Amaury	a-mo-REE	French
Flanagan	-	English (Rare)
Jarmo	YAHR-mo	Finnish
Ascham	['æskəm]
Nou	-	Hmong
Atwill	['ætwil]