Term used to describe a girl who is just plain NASTY but not in the "infested with diseases type" nasty... just viciously NASTY! Often, people have lovingly applied such letters as an initial for someone who is Nasty as in Nasty McNasty... or Nancy McNasty!
Daamnn... did you hear what that NMN just said?? That was just straight-up NASTY that I can't even reiterate what she just said!
by Refrigerator Bandit February 3, 2010
 Get the NMNmug.
Get the NMNmug. No Middle Name. used on school report card to show that a person does not have a middle name. Used most commonly on Asian people.
by Rick Chez December 11, 2008
 Get the nmnmug.
Get the nmnmug. by lilloveydovey June 2, 2018
 Get the nmnmug.
Get the nmnmug. by The9thSlice April 8, 2021
 Get the NMNmug.
Get the NMNmug. 

