FSS

Flinders Street Station (in Melbourne, Australia)

The three letter code for Flinders Street Station is FSS.

by MelbourneTrainEnthusiast June 16, 2023

FSS

For shit's sake. Just for the hell of it. Just because.

Yo, I gave that bitch extra money FSS.

by QuackyDuk April 22, 2017

FSS

Fosho Shawty

You: Yo we goin to da movies tonite?

Friend: fss

by TyAM January 9, 2010

FSS

Fat smelly shit

Dude 1: yo! did you just do a FSS?
Dude 2: Nah mate
Dude 1: I can see it poking out the bowl, you dirty wanker!

Can also be used as an insult

Dude 1: Leave me alone, you FSS!
Dude 2: calm down man, i was just joking.

by Fatcunt322 May 20, 2019

FSS

Fap, shower, sleep

man1: SFS!
man2: isnt FSS better?

by SlothHead January 17, 2018

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 11, 2009

FSS

The acronym for "Fake Sickness Syndrome"
FSS normally sets in Monday-Friday before 8am. FSS is used to get out of everyday task like Work & School etc..
Symptoms of FSS consist of: Fake fever, fake coughing, and of course fake vomiting. If you have any signs of FSS please, dont dispare hope is there.

Wayne: Yo Jose is Kendall at school today.
Jose: Nah man that nigga got FSS earlier this morning.

by Shallah Un Monk June 5, 2006