JK 

jk means just kidding or joke/ing, it can be used interchangeably.

i was just jk=i was just joking
it was a jk=it was a joke
jk!=joking or just kidding
i was jk=i was joking or i was just kidding

JK by KOIETTE September 5, 2023

jk 

Joke, Joking, or Just Kidding, because they all mean the same thing regardless of what Lee tells you.

Lee is a smart person. jk

jk by aspartamed April 4, 2013

JK 

JK means being the most awesome person alive that you can do everything
JK is short for Jungkook
Jungkook is one of the funniest and adorable even when he gets drunk

JK: "Do you know that night apple is poison apple?
ARMY: ???
JK: But I'm okay cause I am...JK

JK by Bangtan Soyeondan December 5, 2020

jk 

Joking!

Are you jk?

jk by Janonos March 6, 2011

JK 

commonly stands for 'Just Kidding' when used online, but can also refer to the ultimate comedian of all time, John Kerry. so whenever you use 'JK', you can think of it as respectfully telling the truth and saluting the world's greatest comedian at the same time!

J.K. was jk about all that 'running for president' stuff... we all knew anyways. well, at least those of us with some moral backbone and decisiveness at least.

JK by karl December 29, 2004

JK 

Just Kristen..

RAH, That hurt SOOO bad, i'm jk.

JK by picklesniffer May 30, 2009

jk 

Jackin' Off (According to the kids at AWHS class of 2011)

The boy got caught jking in the bathroom

jk by Ryan Dro June 20, 2007