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2 definitions by ulzha

 
1.
Shortened form of "okay thanks", in ironic or sarcastic defiance of possible disagreement from the other party.
Dad I can take your car today kthxbai

Go educate yourself kthx

http://icanhascheezburger.com/2007/04/26/insert-cheezburger-plskthnx/
by ulzha October 16, 2008
 
2.
A party where all of the attendees get laid/are offered/arranged a sexual intercourse.

Preferably known in advance and with a voluntary commitment to copulate if necessary on the basis of compulsory empathy
Sure world needs more mandatory sex partying. All those odd fish fucking each others brain out
by ulzha February 05, 2010