you'd better believe it

Also, you better believe it. You may be assured, as in You walk ten miles every day?-You'd better believe it! This imperative is almost synonymous with you bet your ass. [Colloquial; mid-1800s]

Common Names:

Name	Pronounced	Usage
ÉTiennette	-	French
Elenora	el-ə-NAWR-ə	English
Eustaquio	e-oo-STAH-kyo (Spanish)	Spanish, Portuguese
Sam (2)	-	Persian, Persian Mythology
Lawanda	lə-WAHN-də	African American
Mikhal	-	Biblical Hebrew