In World of Warcraft: To act noobish and stupid.

In real life: To screw up everything you touch.
Damnit, I pulled a Zlack. I showed up to my 25 man raid with no ammo, drink, or food!

I was building a lego tower, and I tripped and knocked it over. I am such a Zlack.
by tehBob March 3, 2008
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Dako’s favourite word nobody knows the meaning to
My ZLACK family is over their
by M ask iOS May 27, 2019
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The worst word you could ever use.
1: You heard about Damien? I heard he's been acting... Zlack lately
2: Dude, you know you shouldn't say that.
by Obama_Gaming_Official May 19, 2022
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