It's an acronym meaning "bad madame (miss) dumb", which is to be used when a woman does something really stupid.
by michinn December 6, 2011

by SOULJAH GIRL dunnoe March 15, 2010

Girlfriend: "You didn't text back for 2 hours!!"
Boyfriend: "Sorry babe I was bmd but the vid had a cool story."
Boyfriend: "Sorry babe I was bmd but the vid had a cool story."
by ThothOfTheStreets099 August 3, 2017
