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1.
To do something to perfection or to beat someone mercilessly.
He really Zak'd you up.
by Zak~ April 19, 2008
 
2.
A way of seriously messing something up, like Zak does on a daily basis.
Rob, what did you do to Fedora, you zak'd it up beyond fixing!
by boscotherock April 18, 2008