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An uncivilized tongue. When someone says something that's either completely rude, or sounds like a direct translation of something out of the Korean language.
Server: What would you like sir?
James: Hey, give some of that water-meat!!
Harry: God, James has gotta fucking Korea-Mouth! He's calling fish water-meat.

Steve: He's going to be embarrassing us all night.
by didgeridoon't May 16, 2010
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