What is Ngb?
1.
Short form for "Nice guy but..."
Descriptor of a guy you are not interested in, even though there is nothing glaringly wrong with him. Can be used to introduce a variety of usually minor flaws or reasons that said guy is not "it". Not overly critical, but is final dismissive.
Q: "So, how'd it go with Jason last night?"
A: "It was okay, not great - NGB."
See
2.
Stemming from the term "non-grouper basket", an NGB is a ridiculously hot female.
Yo Sean, check out that NGB!
See
3.
A person who, albeit a good person, is not desired sexually(Nice girl/guy but...)
Dude #1:U hook up with my sister's friend yet?
Dude #2:Yeah, but she's just an NGB