Ballastic Missle Defense.
1. Never wait for the others to ask her out first.
2. Underwater Missle Delivery System that can nuke the world 40 times over if the US is ever attacked by nukes.
3. Tripping a fellow suiter for a babe so you can get to her first.
1. dude, either get some b.m.d. or move over.
2. SSBN Nuke Subs, B.M.D. machines for messing with the US
by technofix February 18, 2006
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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."
by michinn December 06, 2011
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