kbai 

1. An even FURTHER bastardization of kbye and kbi. An abrupt way to end a conversation. Usually used in online forums and in instant messengers.
2. To die. To expire. To cease to exist. To push up daisies. To buy the farm. To kick the bucket. etc...

1.

n00b: n den he wuz all liek ROFLLOLOLOLOLROFLROFLROFL!!!!11`
Jill: kbai. *signs off*

2.

sad emo kid: LIFE JUST ISN'T WORTH IT ANYMORE!!! *sob sob sob* (grabs razor)
nerdy internet kid: *busts in* No go kbai! Want to go get tacos?
sad emo kid: okay.

kbai by Gilmo September 17, 2008

kbaibai 

kbaibai is a cool way to say Ok bye bye. Usually used in chat rooms, forums and IM.
Also related to kbai.

<ChaosKiller> me go sleep
<ChaosKiller> kbaibai
<Ginger> baibai

kbaibai by DecoyDucky February 9, 2010

kbainao 

Similar to kbai, but with emphasis by adding nao. Hence, kbainao.
The nao when added to kbai, kbainao can imply directly to someone that he is expected to leave and likely make a scene upon exiting.

1 It means shoo, go away, I'm done with you.

In other situations it can mean that I am dropping/leaving abruptly, one can probably gather why from the context.

1 Ex.
boy: girl i wanna lick the #### outta ur a$$
girl: oh yeah?
boy: hellz ya
girl: kbainao

kbainao by MynoduEsp_1st September 30, 2011