NBD 

Never
Back
Down

Often used in the act of peer pressure. While it is a simple acronym, NBD is essential to the comradery of a community of friends, bros, hos, sisters, and so forth.

Person A: "Time to drink"
Person B: "i dont feel like it"
Person A: NBD Son...or forfeit your mancard
Person B: *sigh* okay

NBD by iammedan February 3, 2009

NBD 

Nigga Black Dick:

the acronym NBD can used in any situation where the dark ones are. NBD is highly affective as a way for whites to make fun of darks without them knowing because whites are scared.

hey chad, look at all the NBD's in here, shouldnt they be in jail?

yea man, im nervous...wanna go to starbuck before getting those new khakis from the GAP?

NBD by k-nig July 27, 2008

NBD 

Nunc boogerus dentorum = It's time to chew a booger.

Hey, Lou, I'm bored. NBD?

NBD by Steve Hoglund August 1, 2007

NBD 

NBD means:
No
Big
Deal
and it should soon become the next LOL pretty soon.

"Thanks so much!"
"No problem, NBD."
"What does that mean?"
"No Big Deal."
"Cool!"

NBD by Bridget13 September 11, 2011

NBD 

Nigger Borne Disease

Coontact is always bad for white people, unless you like being subjected to TNB & NBDs

NBD by mongol August 30, 2004

NBD 

Never Back Down

A phrase commonly used to encourage a friend to do something crazy or gutsy.

Guy: Yo you should totally ask her out right now.

Friend: No way man I don't even kn-

Guy: NBD! Do it!

NBD by AdderFadder September 4, 2010

NBD 

No Big Deal

or

No Bad Days (less often, and mostly seen on bumper stickers and license plate frames)

hey, thanks for the ride!
-hey, nbd!

NBD by who are you? who who, who who February 27, 2010