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An extremely hard kick straight to the chest, like the one King Leonidas does to the Persian messenger in the movie 300. Some people like to quote Leonidas saying "This is Sparta!" before they do it.
Jim: Eat my last chicken nugget, and receive a swift 300 kick to the chest.

James: (eats the nugget while giggling)

Jim: (stops his heart with a 300 kick)
by SamPick August 13, 2007
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