FS
Flight Simulator. Means the same as MSFS, so Microsoft Flight Simulator
FS9 or MSFS9 means Flight Simulator 9
FSX is Flight Simulator X
FS2002 is Flight Simulator 2002
etc.
1.
A: Hey, what flight simulators you use when you're flying?
B: FS9, X-Plane, Enemy Engaged, LOMAC. And you?

2. Hey, people, someone wants to fly in FS9 through multiplayer today?
by Azazil_6 April 07, 2011

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Top Definition
fs
Full Service - conventional sexual intercourse
by swinger September 19, 2003

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fs
Fucks Sake. Colloqiual (usually Eastern Scottish) internet acronym. Almost identical to ffs but lazier.
fs, those bastards at amazon havent shipped my album yet.
by wadie May 15, 2003

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Fs
Text slang meaning for sure
Guy 1: Wanna go to that party tonight
Guy 2: Fs!
by Bootybootybootymarijuana April 11, 2017

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F-S
To fireswipe, this means when you enter the subway illegally by either jumping the turnstile or using a broken turnstile.
Are there any PHOENIX around? I think we should F-S vin.
by Shazaamizer June 25, 2006

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FS
Short for "full screen", as opposed to WS for "wide screen".
Spider-Man.2.FS.DVDRIP.XViD CD1.avi
by RotJ October 04, 2005

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fs
for sure
john:"u going to that party i heard they got strippers"
james:"oh fs"
by gayfortacos November 14, 2016

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FS
Fuck sluts. That is all
IM gonna go out tonight to fuck sluts, FS
by Wfywdun May 12, 2017

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