köö 

A Finnish version of foo or LOL, a default answer when someone pastes URL, but it's not enough for 'lolling'. Also something that is said when joining the channel or just at a random time as in the example below. Correct answer to köö is ... köö.
Köö can be also used as a part of a word, such as "öököö", meaning OK.
Captain Kirk's name is also sometimes spelt "Köök".
In fact, köö can mean anything.

Someone with handle "Kissa" invented the word 'köö' and it was first used in the IRC-channel #comrades in Quakenet, from where it started to slowly spread around. #comrades is still the main place of 'köökötys' (=kööking)

19:46:50 <@Kissa-> köö
19:46:59 <+Shilka> köö

köö by ultrix November 15, 2003

KoO 

🔥 A short COOL way of spelling or expressing COOL

🔥 How's it going? Its KoO

KoO by ClassicRonnie December 3, 2019

koo 

1. defining something or someone that is very unique and interesting
2. used sometimes to soothe awkward moments
also: koolr, koolst

"Wow! Your fit is so koo."
I think that I'm koolr than you, tho

koo by louafsique July 5, 2020

Koo 

Essentially means being wise to something, “in the know”, and generally understanding how things work. To “know the koo” is the same as to “know the score” in a situation. You can use it as “knowing the koo” or as being “koo’d up”. So, in London you might hear something like:

“You shouldn’t say stuff like that around here! You need to be more koo’d up!”

“Just follow him, he knows the koo.”

Koo by Basskadet June 2, 2019

koo 

To be kool.

That du rag be koo dawg.

koo by Wangsta November 18, 2003

koo 

The act of which the primary aim is to gain, regain or sustain social status, by partaking in an action that the individual perceives to be "cool".

Person A embarrasses Person B in front of Girl C that Person B is trying to impress/pull/shag etc.

(Hence being koo!)

Person B would then have licence to say: "Very Koo!"

koo by Sensini November 4, 2005

Koo 

The name of a family that mainly consists of Sunnykoo, CorruptVonKoo, Corruptikoo, BritishVonKoo and many more.
They have been known for planning many everyday things that happened in Roblox Blood And Iron Discord.

"Blame the koos!"
"Herman is gay koo member!"
"Koos backed lastquest elections!"
"Koos caused lastquest to change wrong perms!"

Koo by ProtoGodzilla December 24, 2019