Floccinaucinihilipilification, the declaration of an item being useless, is the longest non-medical term in the English language.
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If you mouth the word "colorful" to someone, it looks like you are saying "I love you".
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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 United States does not have an official language.
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The dab of toothpaste you squeeze onto your toothbrush is called a "nurdle".
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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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