April Fools' Day, also known as All Fools' Day, is observed in many countries on 1 April.
The day is observed by trying to play a practical joke on a victim who becomes known as an April Fool. The practical jokes range from simple to elaborate. Whatever the trick, the prankster usually ends it by yelling to his victim, "April Fool!"
In certain countries, April Fools' jokes must be made before noon on 1 April otherwise it is the prankster who is the April Fool.
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