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Among other usages of this word, if someone is being a real idiot, it can be used after you prove them wrong/make them look like a fool/pwn them.
Idiot: 2+2=5
Anybody else: No, 2+2=4. Learn some math. Kthx.
by Thrash January 24, 2004
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8
It simply means; Ok thanks
ie k, thx 4 ur help
k thx for your help
by Guedo November 16, 2006
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9
An phrase short for "Okay, thanks" that originated somewhere on the internet a really long time ago. A snarky, quick dismissal. The word today is now old and unfunny, and everybody who still uses it should be lined up and shot.

Scenesters are obsessed with it and end practically every sentence with it. Somebody tell them to stop. For the love of God, please.
Retarded scenester faggot: SUP NIGZ! Mah LJ is friends only, biiiiiiiotch. Kthx. ♥
by o_rly_factor September 02, 2005
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10
A polite way of asking a question or exo-completing a statement.
Üb3R: pleese can i have sum chocylat kthx
ch00b: omg u r lame stfu kthx
Üb3R: no u r mean and i happen to be an 3l33t hacc0r
ch00b: hahaha n00b, u cannot hacc0r i ph0r i r gold host
ch00b: omg me b00t j00
Üb3R has left the conversation
Üb3R has joined the conversation
ch00b has left the conversation
Üb3R has made Üb3R an owner
Üb3R: pwned
Üb3R: kthx
dbzn00b: omg i ph33r =O
by waffle September 22, 2003
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What people say when there space bar is broken to emply that they are thankful for whatever you have just done
nub:kthxforthechocolate
Notnub: That is alright
nub:illseeutomorrow
by fafa March 10, 2004
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12
OMFG Banana (8:40:15 PM): how was your kthxgiving

kthxdieirl (1:19:50 AM): ROOFLE

u bAr J eeT is now directly connected (11:34:58 PM).
u bAr J eeT (11:35:03 PM): ::hopes for lesbian pr0n::
Jon Likes Juice (11:35:19 PM): server2.exe
u bAr J eeT (11:36:00 PM): no trojan for me kthx
by Juice December 06, 2003
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13
Pronounced "kithicks", it is what nerds say to regular people on the rare occasions when they feel superior to them.
Bond: Hey. I've just recently started playing world of warcraft. Can I join your party?

53|>#1|20T#:gain more lvls kthx
by John FitzgibbonsIII August 18, 2007
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