Literally meaning "just kill yourself". Used in cases of extreme frustration of people you would really like to never see again.
by I'm a ninja. For real, I am. February 28, 2008
Person 1: I had too wake up early, now I have to go to work FML.
Person 2: God I'm tired of your self-pity whining, JKY
Person 2: God I'm tired of your self-pity whining, JKY
by CPA mofo September 22, 2009