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1.
tuK
A person or thing that is '1337' on the online world; someone who knows alot; wise.
Hey tuK! What was Bill Gates' IP address?
by Chris Benitez June 25, 2004
 
2.
tuk
Thought you knew
Girl: Where have you been all night?
Boy: At Rico's playing Call of Duty Black OPS, sorry tuk.
by MzNellyBabez December 07, 2010
 
3.
tuk
A generic term that replaces the F-word when used in relation to a person. The meaning of the word is given by intonation.
He's such a tuk, he wouldn't lend me any money.
What a tuk! He crashed his car.
That tuk aced his exam.
by JJabba March 19, 2007