kthnx is generally condescending. Like after a game that you won you'd say 'gg kthnx' Whihc amounts to "Haha, you sucked, go away"

You forgot to buy a kit! gg kthx
by GarlicKnots July 22, 2003
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A lame-core phrase lame-core girls say at the end of any and all myspace comments/bulletins/what-have-you
Subject: SEX!

Body: Now that I've got your attention, comment on my new pix.

kthnx.
by Don Johnson April 8, 2005
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