oS

oS stands for Old School. 'Tis an abbreviation for oS.

The lowercase-then-uppercase type is a way of making it look cooler. "oS" originated from Nitto 1320 Challenge, where we painted oS on our cars while on the team OldSchoolRacing, and even use oS on our cars to show that we've been playing for a long time and say it in chats across the web to this day. A note, oS should not be said in real life, you just say "Old School".

Ice Cube is Old School.
Ice Cube is oS.

The oS's are what makes OldSchoolRacing the best.

by protectmeaura December 12, 2006

os os

Backwards for so so. Originally from The Simpsons.

Homer: So, how was it?
Bart: os os.
Homer: What?
Bart: That's backwards for so so.

by gak September 15, 2006

oseli

Is attracted to kpop or hot korean men :).

oseli is obbsessed with so much kpop she dosent pay attention to people

by lovleyrose June 03, 2020

os

A dumbass who does not get off tiktok and loves food

Os is a queen and a foodie💖💖💖

by Ksisisiskskskek May 31, 2020

OS

Oddly satisfying

That's OS

by nooothaankyouuu May 25, 2021

OS

Kid who swears and drinks a lot and is not liked by Hometown

That kid is such an OS

by TenIsGOAT August 16, 2019

OS

Operating system. Simply, a program that runs your computer. Examples of an operating system are CP/M, DOS, Windows, Mac OS, Linux, and Palm OS, though there are many more. One will oftentimes become overly attached to their OS, preaching it as though it were a religion and shunning all who use anything even slightly different.

Man: My OS of choice is Windows XP.
Woman: My OS of choice is Mac OS X.
Man & Woman: (killing eachother)
Supa-Nerd: My OS of choice is CP/M! 8086 FOREVAH!!!

by Chow October 28, 2004