Roger: Hey do you know how to convert movie to MPEG?
Joe: Sorry, I know ntn about video conversion.
NTN (noise through nose) is a replacement "lol" for all those times you dont actually laugh out loud. Most the time you send someone an "lol" you don't really laugh at all. What do you do? You NTN.
"Tim- Dude last i night i got drunk as fuck and pissed on my grandmothers furniture.
Steve- NTN thats fucked up dude"
Acronym standing for Not That Nice. Can be used to characterize almost anything like a show, girl, etc. Mostly used while IM'ing chatting someone, otherwise, sounds retarded to actually speak.
Evan- "Yo, do you like that new Eminem song?"
Daniel- "Nah man, it's really NTN"
Person 1- "Ok...Sasha?"
Person 2- "Nope, NTN"
Mike :What's up ?
Judge: Yo! Those niggers fucking stole my nintendo wii!
Rob: I told you man! NTN!