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2.
nbf
Not Being Funny. A state of sincerity, where you're so illiterate that the only way you can express how sincere you are is by highlighting how insincere you aren't. In acronym form for efficiency purposes, to be used largely in written communication i.e. msn, text, email, law exam
"nbf, but if i don't get into university heads will roll."

"nbf, but just because you like anal sex doesn't mean you need to tell everyone."
by Liam_B_Rizz June 18, 2008
 
1.
NBF
New Best Friend. Pretty much what it says on the tin, this one. Everyone (nearly everyone) is interesting when you first meet them, although the gloss can quickly wear off once you get beneath the surface. This is expecially difficult to deal with if you have since married the person. Be wary who you make friends with, and be especially weary if they act like stalkers.
I like him, he is my NBF!!
by stealth-bowler July 23, 2006
 
3.
(Nice bodied female) An attractive woman, with a rockin' body, similar to a Pinkini girl minus the beach and pink bikini.
" Dude, look at that N.B.F over there, she has some sweet curves, an awesome rack and a tight butt, almost like that Pinkini girl... who is that?"
"That's my sister."
"HOW MANY FUCKING SISTERS DO YOU HAVE?!"
by Robbles the wise one September 06, 2011
 
4.
NBF
Not a Big Fan - Mildly dislike or aversion.
Jack - "Do you like that coffee?"
Jill - "NBF"
by sirsloop May 18, 2011
 
5.
No Best Friend Syndrome.

whena teenager is lacking a best friend in severe cases it's NFAAS (no friends at all syndrome)
Omg, Kayla has NBFS so she has to cling onto kat.
by sarabeautiful March 10, 2005
 
6.
NBF
Natural Bitch Face. The face of someone who naturally looks pissed off as you see them walking around or performing an idle action. You may think they are having a bad day, but that is just their natural facial expression.
Jenny: Did you see Dilon today? He looked so pissed off for some reason.

Melanie: Naw he's fine he just has a NBF.
by Spankithard49 March 13, 2011
 
7.
NBF
Nigger Boy Friend
Jase is being a NBF Today cassie!!
by Port Royal is the shizzle July 10, 2008