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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The Simpsons are responsible for popularizing the word 'meh'.
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The word "gorilla" comes from a Greek word that means "a tribe of hairy women".
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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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In Denmark, "Fart-kontrol" means "Speed check".
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