What an AOLer says after having cybersex, or even sex in general.
<Mark176> How was it for you?
<Laura69> Kthxbye
by Bastardized Bottomburp October 6, 2003
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A word that stems from the phrase "k thx, bye" (and it's derivitives), which are bastardisations of "ok thanks bye".

This uttering is commonly associated with so-called IRC "lamers" (see lamer) renouned for the overuse of retarded abbreviations (such as the above) during chat sessions.

It is used extensively in IRC geek humour and in-jokes. See the example.
plz2b dieing, kthxbye
<martin> i r not on ipv6 KTHXBYE!!!!
by dw January 19, 2003
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Short for ' Ok, thank you very much for your kindness in the situation I am currently in, may God be with you'
McDonald's employee: Here's your burger, you know, I wish I could afford Blah Blah Blah...

Me: Oh my burger, kthxbye *Leaves*

McDonald's employee: I have no friends...
by CrystalExploder February 6, 2017
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something a veeeeeery lame person would say.
by BLASTBEATZ '77 September 19, 2006
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Short for Ok thanks bye. Usually used to signafy to a llama that he is being an asshat.
You are a llama, kthxbye.
by Cactuar December 22, 2002
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A sudden, abrupt and rude cessation of conversation that is used to demean one or more participants of the conversa-
KTHXBYE
"I wanted to snipe that auction, why'd you go and do it?"
"Shut it bitch, I got it first, KTHXBYE."
by Goose December 9, 2003
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