Definitions by Zeebands

OSJB 

OSJB means On Saint John the Baptist. Used when you're swearing on something and you mean it with a passion.
When OSJB is used, there's no turning back because Saint John is a respected figure in the Bible and no disrespect towards Christianity is tolerated. So, you better not be lying.

Your bro: Imma get that girl's number OSJB.

You: Dang, you put that on Saint John, you def not cappin!

Your bro: Def not, gang.

OSJB by Zeebands April 21, 2023