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 word 'mortgage' comes from a French law term that means 'death pledge'.
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The Simpsons are responsible for popularizing the word 'meh'.
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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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"Stewardesses" is the longest word that is typed with only the left hand.
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