Big Floppy Donkey Dick. Used as a insult if you want to call someone something with out them knowing what it means...hehe.
1.Oh, Johnny has such a B.F.D.D!
2.Your such a fucking B.F.D.D, MOM!
by Whitney April 02, 2004
Big Floppy Donkey Dick
He Kevin, remember Long Dong Silver? He had a BFDD, KINDA!
by W105 September 03, 2003
Stands for big floppy donkey dick. Or but fuckin donkey dicks
BFDD alert! BFDD alert! WEEOO WEEOO !!!
by BF Sean DD October 17, 2007
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