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Literally means, "Okay, thanks, bye" Usually said to be a bit more sarcastic and rude when trying to make a point. Used to end a conversation/point quickly.
"You're so stupid, don't ever talk to me again, kthxbi."
kthxbi by priceisright August 29, 2005
Related Words
I understand. Your help in this matter has been greatly appreciated. However, with much regret and much haste, I must be departing from our conversation.
newb2342: da partiez @ 4, b there!!1
lolz3r: kthxbi!!!!11
kthxbi by i made this box June 19, 2003
this means ok thanks bye

k = ok
thx = thanks
bi = bye
'ill drop round yours later to drop round your dvd, cya'
'kthxbi'
kthxbi by Dave Gordon July 7, 2004

kkthxbye 

1) A phrase used to end a conversation with someone and thank them for talking to you.

2) A phrase used to change a conversation with someone or two show that you do not like what they are doing/talking about.

**A common misspelling is kthxbye** (owned!)
1)
Person 1: Okay...Cya around!
Person 2: KKTHXBYE

2)
Person 1: What's the first thing that comes to mind when you think of two lesbians in a Thai fish market...?
Person 2: KKTHXBYE
Person 1: lolzies! J/k!
kkthxbye by Maxx Paigne December 27, 2003
- : What time is it?
- : 5:30pm
- : kkthxbb
kkthxbb by Ower December 27, 2007
To say three words at a time and to make everyone laugh because you said "Okay, thanks, bye."
Girl: oh my god, i forgot my phone in the bathroom. dont let me fall asleep kthxbi.
Guy: You're stupid.
kthxbi by MMMCheck July 25, 2009