JK is the new unlimited Jeep model with 4 doors.....
Damn look at the JK flex...
by HeatherHovey May 14, 2008
Get the JK mug.
A abreveation of "just kidding". Origanated from AOL instant messenger (AIM). Also stated as JK'ing.
person 1:I heard Canada was anexed into the U.S.
person 2:That is the most retarted thing i have ever heard
person 1:Oh, i was JK.
OR
person 1:Oh, i was JK'ing
by MEMAW March 25, 2006
Get the JK mug.
Just kidding.

an interesting variation:
jk, jk, jk ROWLING
person1- YOUR UGLY
person2- :(
person1- JK
by bethhhh October 11, 2006
Get the jk mug.