Acronym for "bluetooth douchebag" which is person who thinks that wearing a bluetooth handsfree earpiece in public will elevate their status in society.

Anyone caught wearing a bluetooth handsfree earpiece in public should immediately be reported to BluetoothDouchebag.com by way of a picture in order to call this douchebag out on their douchebaggery.
Look at that guy, he must be closing tons of business deals if he has to be on the phone in line at Starbucks! Oh wait, he's just a BTDB.
by James Mastercraft August 31, 2009
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Big Titties, Dumb Bitch. A girl who’s survived off of Big Titties; and no brains.
Connor: Hey, did you see Nicki this morning?
Claire: You mean BTDB? Yea, I saw her walk right into a door. Good thing she has airbags
by BTDB November 1, 2021
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