Switching letters is called spoonerism. For example, saying "jag of Flapan", instead of "flag of Japan".
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Q is the only letter in the alphabet that does not appear in the name of any of the United States!
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The phrase 'rule of thumb' is derived from and old English law which stated that you couldn't beat your wife with anything wider than your thumb.
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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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Floccinaucinihilipilification, the declaration of an item being useless, is the longest non-medical term in the English language.
125
The word 'mile' is derived from the Latin word for 1,000 - the number of paces it took the average Roman!
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