English version

April Fools' Day

From Longman Dictionary of Contemporary EnglishApril Fools' DayˌApril ˈFools’ Day (also All Fools’ Day) noun  TRICK/DECEIVEApril 1st, a day when people play tricks on each other
Examples from the Corpus
April Fools' DayAt first I thought it must be April Fools' Day.He was indicted April Fools' Day.He went to police college on April Fools' day, 1970, where he was the best student among his intake.It's a charity thing - something to do with April Fools' Day.
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