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short for "No Big Deal!" when talking (not necesarily online, say NBDNoBigDeal. all smooshed together like that. possibly in a sarcastic manner.
1. A. Omigosh! i cannot believe i forgot my paper at home
B. Dont even worry about it. NBD. No Big.

2. okay so i ran 8 miles at track today NBD, no big deal. (sarcastic tone)
by Megan! March 22, 2005
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22
never been done. opposite of ABD (already been done)

popular in forum culture
by epicly lally'd August 28, 2006
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No Big Deal; If something happends and its not a big deal.
"Yeah its nbD to me, Enemy Territories"
by Logan.G aka trnx March 27, 2007
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24
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
by iammedan February 03, 2009
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26
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!"
by Bridget13 September 10, 2011
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27
Nunc boogerus dentorum = It's time to chew a booger.
Hey, Lou, I'm bored. NBD?
by Steve Hoglund July 02, 2007
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