CK 

Coke/Ketamine. Basically two of the vilest, most disgusting drugs in existence mixed together and snorted as one line. Neither drug is particularly great by itself, and combined they will fuck you up beyond all recognition. Do not do it.

Dave just did a line of CK... gross.

CK by PulpFictional February 9, 2010

CK 

Character Kill - Formally used it MMORPG games

The player would have their account blocked and they would have to make a new one.

NOT A PK.

Johnny got CK'ed, but don't worry he is on a new account called Asshole

CK by RyuuYasui January 26, 2013

Ck 

Conversation killer

Oh james! You're such a ck!

Ck by Appels111 April 4, 2016

Ck 

Common Knowledge

Someone who gives you information or help you with something

Boy: What does ''frightened ' mean?
Girl: Scared
Boy: Thank you ck

Ck by AdamIsSiri'sSon January 5, 2018

CK 

Basically what every car person calls a mustang. A Crowd Killer.

Person A:"Dude look the CK is about to do a burnout!"
Person B:" Awe shit better back up before I get ran over."

CK by Matayugumi July 10, 2018

CK 

To masturbate in front of someone. (Verb) Also referred to as Pulling a Louie.

He CKed her.

CK by Booty meister May 9, 2019

CK 

A CK means to snort a line of Cocaine and Ketamine all mixed up in one big line. A pretty dangerous and not recommended cocktail as Cocaine is a stimulant and Ketamine is a dissociative.

"Met a guy the other day who did a CK line and 10 mins later ended up riding a bike into the side of a fuckin coffee shop!"

CK by J to the K47 February 23, 2021