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1.
Used when NBD just doesn't cut it, Stands for "No Big Fuckin' Deal"

Describes something so awesome that it cant be said without sarcasm.
"I just ownd like 10 ducks and 3 geese, came back home and pwnd it up on wow for lyk 10 hours, NBFD or anything"

"Im kind of a big deal, didn't know if you knew this or not"
by tehleet November 16, 2007
 
2.
No Big Fucking Deal. The actual meaning to the sarcastic phrase BFD.
a: Wow, look at this piece of ice!
b: Actually, its NBFD.
a: Why's that?
b: 'Cause its only glass, ass.
by NHblows July 01, 2007