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1.
Literally: Thanks for the Congratz.

Commonly used as a response upon reaching an Achievement in World of Warcraft and your guild-members yell: "Congratz" or "Gratz"
chuck_norris has earned the achievement 'Leeeeroy'

twinkydink: Gratz!

chuck_norris: Gratzias!
by pocoperoloco February 03, 2010