-just kidding
-What people use to say crap about you to you in your face and mean it but not be a complete jerk directly to you, but still are.

FYI: 75% of the time people say JK they aren't...
(Football Team's record is 0-10)
Player: You are the freaking worst QB I have ever seen!! JK!
QB: ..... ..lets see you do it......
by David Rivera May 21, 2006
Used to replace "Just" in a sentence.

On the IW.
This jk gets better and better
by JohnIW April 14, 2009
Jackin' Off (According to the kids at AWHS class of 2011)
The boy got caught jking in the bathroom
by Ryan Dro May 31, 2007
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.
by karl December 29, 2004
Abbreviation for "just joking"
Your best girl friend calls you gay or ugly. To assure you that she didn't mean to hurt your feelings, she says "JK dude, JK"
by Rashnee May 11, 2005
just kidding
You got a D+ in your test

by 6765 March 10, 2016
just kidding
i want to date you jk bitch
by shit dicks bitchs January 11, 2016

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