FSS

acronym for Freshman Slut Syndrome. The period of time, often in the first weeks of fall semester, where freshman girls have sex with every guy they meet at a party.

I heard Jen fucked 5 guys this week!
Yeah shes got a major case of FSS

by Tit1 July 10, 2009

G.F.S

Girls Food Sex
All a guy needs in his life

Brandon: I need a life

Yoshiki: You need G.F.S

by Imdoingyourmom March 12, 2012

FSD

Short for "fuck shit dicks"

FSD!! my calc final is in an hour and I haven't been to class in a few weeks

by ClineCline August 11, 2010

FSU

Fuck shit up. Kinda like the synonym to "tear it up".

We were at a party last night, and boy, did we FSU.

by shanaynay2011 May 14, 2011

FSI

The latest in fuel injection technology released by Audi/VW. Not to be confused with "You FAssi" which means you are a loser! lol

This technology is said to increase power output and improve fuel economy at the same time. FSI is the same, minus the TURBOCHARGER. Is it any good? You betcha!

by SAF-E December 26, 2007

FSHI

FSHI; Acronym; "Funny, Stupid, Horny Intentions"

That pretty much sums it up; it's the new LOL or OMG! If you think about it, FSHI encompasses a wide range of thoughts, emotions, and feelings...It can be used to describe almost any situation!

(1) "Julissa, did you see how that guy was checking you out as you posed for that picture; that was totally FSHI"
(2) "Dude, did you see that picture of John, he so has the FSHI face!"
(3)"Check out how they're dressed tonight, FSHI is written all over them!"

by Jay Neutron April 10, 2009

FSB

short for Flight suit boners, and occur when you are a pilot and you see some fine ass female while wearing your flight suit and you start to grow a full on rager, but instead of hiding it, you MUST flaunt it.

Hey Dan, is that an FSB i see?
You know it.

by jamie webber December 12, 2010