nmu 

The most pathetic response anyone can give you during a text or instant message conversation.

Mostly used by immature girls that don't actually give a fuck about what you're doing...especially if they couldn't even type out something longer then a 3 letter response.

2nd in pathetic to "lol", people that use "nmu" in a serious form deserve to be forever deprived from their cell phones and computers.

If a response as pathetic as "nmu" is used as a response, you should not even respond in the first place.

Guy: Hey what's up??
Girl: nmu
Guy: Wow that's a fucking pathetic response
Girl: Soorrryyy I'm (insert bullshit excuse here)

nmu by ItstheWaveTV September 22, 2009

nmu 

Online lingo; abbreviation for "Not much, you?"

-"What's up?"
-"nmu"

nmu by markotsay7 May 24, 2003

NMU 

Originating from the phrase "nm u" in response to asking a question similar to "What's up?", an NMU is a person who seriously does not give a flying fuck about what you have to say. These people often seem uninterested over text, and would rather be doing whatever they are doing. They are the apotheosis of not giving a shit. NMU's often use terms such as 'same', 'wow!!', and 'cool' etc. Use 'lol' to compensate for the complete 'I don't give a shit' in their soul. Occasionally will use sarcastic exclamation marks. Never uses capitalized letters, unless screaming.

Guy 1: Hey, what's up?
Girl 1: nm u
Guy 1: Uh, just sort of watching TV.
Girl 1: wow thats really cool!!!!!!
Guy 1: Fuck this, you're an NMU.

NMU by Alahu Snackbar November 30, 2014

nmu 

The emu's more popular and successful cousin; commonly used in AIM slang.

Person: hey what's up?
Other Person: nmu?

OR, EVEN BETTER...

Person: hey what's up?
Other Person: NMU ATTACK!

nmu by Teh Kt-zors! June 18, 2007

nm u

not much, you
also: nm e - nothing much either

"sup" "nm u" "nm e"

nm u by ben and vin December 29, 2005

Nmuk 

The most amazing, uber 1337 punk rawker there is. He posts on Allakhazam.com. In the main EQOA forums. But sorry ladies, he is attached at the moment. But, if you would like some topless pictures of him, drop me a line, although they sell like hotcakes.

Oh, yes, I do mean he IS the MOST UBER l33t hax0r dat will pwn joo and teh n00bzo0rz, and phl4m3 you to hell if you get on his nerves. He IS uberer then Murrun, and EVERY single other poster at Allakhazam.com. A perfect human being.

Nmuk made me scream last night.

Nmuk by iluvNmuk January 25, 2005

nmuman 

Bitch ass mutha-fucka. Dumbass Piston fan. I'm out of explicits.

He, nmuman,fucked jvanbusk up the butt.

nmuman by Darko Milicic November 24, 2004