An abbreviation that is widely used in texting and on Facebook, Twitter, Instagram and elsewhere on the internet, but what does NBD mean in slang?
NBD stands for No Big Deal.
NBD is usually used at the end of a bragging statement to feign nonchalance, thus making it clear that it is, in fact, a very big deal.
Eating in the same restaurant as Jay Z and Beyonce. NBD
No Big Deal