April Fools' Day is a fun tradition where people play pranks and jokes on each other on April 1st. It's a day filled with laughter and light-hearted tricks, like putting fake spiders in someone's lunchbox or changing the time on their clock. The goal is to make others laugh and enjoy some harmless mischief. It's a time for creativity and silliness, bringing friends and family together for some good-natured fun.