In 1700s, the deer skin was a common medium of exchange between the trading settlers and the native Red Indians in America. This is how a buck became a slang for a dollar.
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Switching letters is called spoonerism. For example, saying "jag of Flapan", instead of "flag of Japan".
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The equivalents of the English saying "That's Greek to me" are "This appears to be Spanish" (German), "This is Chinese to me" (Dutch), "It's German to me" (Philippines), "It's Hebrew" (Finnish), "It's Chinese to me" (Hebrew), "Sounds like Mars language/These are chicken intestines" (China).
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Pokémon is Japanese for Pocket Monsters and Chinpokomon (the South Park parody) is Japanese for Penis Monsters.
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There are around 41,806 different spoken languages in the world today.
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