Can you believe it? I won the lottery!
OMG, really? Can I have $20,000 for my student loans?
No I was JK ... that'd be sweet tho, right?
... why would you do that to me?
|LJK||LOL just kidding|
|HHJK||Haha, just kidding|
|RUS||Are you serious?|
|LOL||Laughing out loud|
|ROFL||Rolling on the floor laughing|
|LMAO||Laughing my a** off|
|SOHF||Sense of humor failure|
|PJDWYS||Personal joke, don't worry yourself|
JK stands for "just kidding." People who are being facetious use this acronym to indicate that a previous statement was said in jest.
For example, a person who tells a Trekkie that Star Trek: The Next Generation sucks may quickly backpedal by sending JK in their next message. Or, someone who claims to have won the lottery may send JK after you start asking them for money.