Oos 

Oos is usually used to enhance you punching power in a fight, saying oos will increase Ur chances of winning by 91%

"Damo get on the road cunt
"Yea righto
Damo oos oos, Gary's fucked up

Oos by Oosdog August 5, 2020

Oos 

The sound somebody makes when a hard dick enters their arse.

Kerzman said "Oos" as Peter entered him from behind.

Oos by giant_johnson July 19, 2017

OOS 

it means your penis is cold.

"uumm... OOS"

"gtfo noob lol"

OOS by Ppeisgponsepgisn July 29, 2008

OOs 

Balls, as in testicles. Also, big balls.
The strength or stupidity to make hard decisions or do courageous things.

Greece is winning, because Europe doesn't have any OOs (Alice - 14/06/2015)
Man, it took some OOs to face up to that angry mother.
He was kicked in the OOs and went down screaming.
(used in written text only, not in speech - multi-lingal)

OOs by Hassa June 18, 2015

Oos 

Cannabis, Weed

Hey, hast du das oos?

Yea bro!

Oos by Timmbl November 10, 2021

OoS 

Oath of silence.

Just a shorter way of typing out Oath of silence.

OoS means "Not talking for a long period of time"

OoS by 7xiu7 September 18, 2022

OOS 

This is an acronym for "Out of Service".

The computer is OOS.

The toilet is OOS.

The sink is OOS.

OOS by LingDanc803 June 26, 2023