Just Kidding, I'm an Asshole - When you follow a mean comment with JK, you can instead use JKIA to let them know you're aware that you are using humor to camouflage the fact you were being an asshole.
R: "OMG your mom is fat!!!"
E: "No effing way. Youre ugly and stupid."
R: "Oh I'm just jkizzles..."
E: "What the efff?"
R: "'Jizzles!' You know, like jkjk or jp or just kidding?
E: "oh OMG! Jkizzles!"
R: "Jkizzles!"
YAYYY!