(Noun)
Stands for ¨Back-In-The-Day-Booty*¨; Used to describe that nostalgic feeling when you reminisce the days that you used to hit dat ass back in the day.

*can substitute in other options based on the situation or context
Person 1) Hey did you see dat girls ass?????

Person 2) Yeah we used to date for a while

Person 1) Did you hit that?

Person 2) Yeah. I remember that B.I.T.D.B. real well.
by Abe S February 8, 2019
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