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2.
Short for None of my business
What happened to your girlfriend getting knocked up is NOMB
by Gadgets July 23, 2005
 
1.
An acronym, or cyber short-hand way of saying "None of My business"
Person 1: I had an amazing time last night!

Person 2: Would you tell me about it or is it NoMB?
by forrestcoff October 25, 2009
 
3.
To suck on, kiss and to generally enjoy boobage with the face without actually motorboating them.
James: Oh the other night I got a proper go on Abae's tits!

Patrick: Did you nomb her?!

James: Mate her boobs had wrinkles by the time I was through with them. She was well and truly nombed...
by nombnombnomb January 26, 2014