1. The phrase used after saying something ridiculously random and often hilarious
On a facebook wall: "the car door just attacked me in the face. K bye."
A short form of "ok bye".
Person A: "I'm gonna bounce."
Person B: "K bye."
White girl equivalent of fuck you and all that you stand for. The highest insult possible from a white high school teenager, used only in cases of extreme distaste. Different levels of hate are represented by these variations: K, K Cya, Kaaaaay
"So, I heard you hooked up with my ex"
Another way of saying "just get lost already" while on msn or facebook.
person 1- OMG HI
person 2- hi
person 1- TAGGED YOU ON FB LAWL :D
person 2- yeah
person 1- hows you? i am GREAT lol xxxx
person 2- gd....
person 1- lawl :P
person 2- ...
person 1- omg g2g LOVE YOU LAWL
person 1- :* MUWA lol cyyyaaassssszzzz
person 2- K bye