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 11, 2004
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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 7, 2003
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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 19, 2007
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A shortened term for "kay thanks." Used in excess by emily.
GOD STOP BEING BITCHES AND ASSFUCKERS kthxbye.
by brianna! March 25, 2005
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In the language of the SPAK, this term is an insult used to call another party a liar (PLZ2LIE) and summarily dismiss him/her by the added KTHX.
User1: I am a god.
User2: PLZ2LIE KTHX
by derhS August 24, 2003
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While this literally expands to "tah tah for now, okay, thanks, goodbye..." the pop culture connotation is that you are making a flippant or perhaps merely hasty retreat from a conversation with the speed of a 1980s or 1990s Anime school girl. The character of Yukio in Deadpool 2 comes to mind, as well.

One can also shorten it further as "ttfn kthx bai" or "ttfnkthxbai".

Certainly related to, though a nuance in use of the constituant parts "ttfn" "kthx" and "bai". The "ttfn" adds a friendly aspect, while the "kthx" adds snark, followed by the finality of "bai" - when combined it forms a powerful and ambiguous immediate ending to a conversation, though ironically is often not the last words. It's quite common to have the other party respond with expressions of either offense or solidarity with your assertion using this phrasing.
Friend: "So yeah, I know I've been telling like every gory detail but ..."
doorbell rings
You: "OMG, my pizza is here! I've got to go, sorry!"
Friend: "No problem..."
You: "ttfn kthx bai"
Friend: "Bai"
by Mad Money Willy G August 29, 2018
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