It is a term used to describe a Big Mexican Dick
Damn Thomas you got a BMD in your pants
When i guy says he’s about to “BMD” is his saying that he is about to jack off/masturbate.
Person 1: Yo bro what are you doing?
Person 2: Nothing, i’m about to “BMD”
It's an acronym meaning "bad madame (miss) dumb", which is to be used when a woman does something really stupid.
Woman: "I can't believe I did that."
Man: "Yeah, your bmd."
**Girl plays Nelly Furtado Music**
"Dude...BMD"
"What?"
"The bitch must die!!!"