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No one really knows for sure but the idea is in France in the 1500s New Year's celebrations would start a few days before then end on April 1st. When the date changed to January 1st people who still celebrated on the old date would be made fun of as April fish. A few centuries later people would try to stick a paper fish onto someone's back, without them ...


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Origin of April Fools' Day or April Fool's Day1: A disputed association between April 1 and foolishness is in Geoffrey Chaucer's The Canterbury Tales (1392). ... In 1508, French poet Eloy d'Amerval referred to a poisson d'avril (April fool, literally "April's fish"), possibly the first reference to the celebration in France. ... Some writers ...


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