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A Polish slang term. Derived from the root word Kozak. An act of trying to come off as Polish as possible, especially as a hooligan, by using more clever street slang & wit. Usually someone who Kozaczy oneself is showing his street smarts/dominance in order to impress, or to show belonging to that particular group or persons. An act to gain acceptance, and show ones' street credibility as a Polak hooligan/thug, to other Poles.

Pawel przyszedl do klubu i zaczal kurwa Kozaczyc aby pokazac ze jest ziomkiem, i poderwac dziewczyny.
by Luke K November 27, 2005
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