IFS 

Acronym:
(1) International Federation of Science
(2) Ickle Fickle Sassykins

Noun:
(3) A natural phenomenon where the concentrated levels of black sass within an area exceed 75%.

Oh dang, look at that! It's an IFS!

Bro, I work for the IFS.

Hey, what's up IFS?

IFS by Dichlorodiphen February 11, 2015

IFS 

Independant Front Suspension.

I keep breaking my cv axles with this damn independant front suspension.

IFS by muthafukin August 1, 2005

IFS 

Incredibly Fucking Stupid

This acronym is commonly used in internet forums and chat rooms.

"How do you know if water is wet?"

"IFS"

IFS by Lookit January 23, 2009

ifs 

I fuckin swear

ifs i saw this here before

ifs by Anonymous October 29, 2003

ifs 

I fucking suck.

Ufs, ifs, we all fucking suck.

ifs by earinlololol December 17, 2008

IFS 

Similar to IBS,Irritable Friend Syndrome can occur when a friend unexpectantly morphs into an obnoxious bitch, but you have known them too long to severe the relationship.

Help me! I have serious IFS with my best friend since 7th grade and I don't know how to tell her to shut the hell up without hurting her feelings.

IFS by Jeanniebean137 November 12, 2007

IFS 

abbreviation of "Irritating Fucking Scotsman"

My god, look at that fire crotch, and an IFS to boot!

IFS by amotiser August 25, 2010