j/k is common'ly used on most internet based chatting advocates it means"just playing,or just joking"playing aroundmostly used in forums or online games.someone says a de`meaning sentence to some one and after 3 seconds, after the other person is already steaming with anger the offender types i am j/k its really stupid in my opinion but it will never fail to be typed, sometimes said outside of the web'.
guy1:hey dude your moms such a bich and a big slut,you wanna know who your dad really is?".
guy2:.......
guy1:j/k hahaha.
guy2:.......
guy1:j/k hahaha.
by Linux_guy October 23, 2007
Get the j/kmug. 
Local Narc
Crazy Mother called Annie- He has a sister called Mia and a brother that is called Greg. His mom is notoriously known for sleeping with the scituate police department, patrolling the streets and turning in 'future criminals'
Crazy Mother called Annie- He has a sister called Mia and a brother that is called Greg. His mom is notoriously known for sleeping with the scituate police department, patrolling the streets and turning in 'future criminals'
Yo its J Brod, whats good yo
by gremlin ohh September 24, 2011
Get the J Brodmug. 
Lil J has a huge penis
by I wanna fuck Kylie Jenner October 12, 2018
Get the lil jmug. by KsTeezy June 15, 2008
Get the Apocalyptic Jmug. Someone who calls you a minimum of 12 times a day, usually asking a wide variety of work related questions, regardless of whether you are on or off the clock.
Buddy 1-Hey, who just called you?
Buddy 2-Guy from work.
Buddy 1-Aren't you off today?
Buddy 2-Yeah
Buddy 1-That guy must be a real Larry J.
Buddy 2-Guy from work.
Buddy 1-Aren't you off today?
Buddy 2-Yeah
Buddy 1-That guy must be a real Larry J.
by Riverrat March 27, 2015
Get the larry jmug.