FNS 

Fake Nigga Shit.

Used when someone's actions denote lameness, or a lack of agreement with a code of morality (bro code, etc.)

Person 1: "Yo, fuck your hometown! That shit is lame."

Person 2: "Damn son, why you gotta hurt my feelings like that. That's on some FNS."

FNS by McBoner July 5, 2012

FNS 

for nostalgia's sake; do something for the past great memories.

I popped in The Legend of Zelda into my old NES FNS :D

FNS by bdrssxer October 20, 2008

fns 

for nostalgia's sake

I haven't watched My Neighbor Totoro in since I was a kid... I'm gonna watch it again fns.

fns by bdrssxer October 22, 2008

FNS 

(Flaw Nigga Shit) the state or being of a flaw stereotypical African american

1."Wasn't you suppose to go pick up your girl an hour ago?"
Naw she can walk.
"Dangggg, thats that FNS."

2."A man, why you ran when I got jumped?"
You got jumped?
"Fuck you man! You on that FNS!"

FNS by IcyM14 November 6, 2011

FNS 

FNS stands for Flared Nostril Syndrome. It occurs when someone has abnormally large and/or flared nostrils all the time. A perfect example of this syndrome is on Mark Texiera of the Yankees, he has a bad case of it.

Hey man, what's wrong with that guy's nose?

Nothing, he just has a bad case of FNS.

FNS by Miker94 October 26, 2009

FNS 

Fart n Shart

"hey, what is that smell?"
"Oh don't worry about that little guy, it's just a little FNS"

"did you want to get some whataburger?"
"Heh I would but then I'll be a real FNS son of a gun"

"Hey, is Lad dawg working today?"
"Nah he's on leave and had to FNS"

FNS by Fartnshartass May 2, 2022

FNS 

An abbreviation for Fat Newfie Shit, often used to describe loud,large newfies that grew up in Port Hardy British Columbia and have no accent. They aslo seem to have a large amount of game that no one can explain and are often recognized as slimeballs.

Jon is a FNS.

You arent a real newfie your a FNS.

FNS by Port Hardy PIMP April 30, 2006