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
40๐ 35๐
Just kidding.
an interesting variation:
jk, jk, jk ROWLING
person1- YOUR UGLY
person2- :(
person1- JK
26๐ 25๐
Abbreviation for "Jungkook"
Often used by Kim Seokjin
"hey jk how are you"
3๐ 1๐