shortening of "k thx bye". The K is short for OK, which is short for oll korrect, which is a facetious alteration of All Correct. thx is short for thanx which is a facetious alteration of thanks which is short for thank you. Bye is short for goodbye, which is an alteration of alteration of God be with you. "kthxbye" is the pinnacle of English's advancement, shortening "All correct, Thank you, God be with you." into seven lowercase letters. Humanity is doomed. Obviously, it is used to end a conversation *fast* that you don't want to be in anymore.
Whiny bitch: Here's your hamburger. Anyway, as I was saying about how bad my life is...

Other dude: Yum, burger. kthxbye. *leaves*

Whiny bitch: I have no friends. Wan wan wan.
by kaeru July 9, 2003
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To snub someone off; to abruptly end a conversation after requesting something.
David, get me that drink, kthxbye.
by Rob March 23, 2003
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Disrespectful form of quick politeness and salutation after one has served a purpose to another.
"I just uploaded that paper you asked me to write. It took me about four days, I hope you'll like it."
"kthxbye"
by LeSeid January 16, 2003
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closes hai block statement in LOLCODE.
Eg. marks end of program code.
Sample hello world LOLCODE program

HAI
CAN HAS STDIO?
I HAS A VAR
GIMMEH VAR
IZ VAR BIGGER THAN 10?
YARLY
BTW this is true
VISIBLE "BIG NUMBER!"
NOWAI
BTW this is false
VISIBLE "LITTLE NUMBER!"
KTHX
KTHXBYE
by Pluto87 May 20, 2009
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1.) Form of the phrase "Ok, Thank you. Goodbye." Used exclusively on the internet, most commonly in cases where a person no longer wishes to continue a conversation.

2.) Same phrase, used to intensify an argument by making all who are involved angry at that person for using the already overused phrase.

Can be replaced by : kthnxbye, kthxownt
uber1337: France is ass soup. kthxbye.

Manawski: What? You are full of it you piece of ....

by Manawski March 7, 2003
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Used to signify your winning of a wordflamewar/word or to show that your insult was best and nothing can beat it.
by lmao July 1, 2003
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Okay my good sir, thank you for your givings, I am departing from your company
A: You're a fucking moron! Anime is COOL!

B: kthxbye
by Ethan June 11, 2005
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