..."By the mid-17th century, the April Fools' prank parade had spread throughout much of Europe under the name "All Fools' Day." It developed into a day on which friends tried to trick each other into running silly errands in search of nonexistent objects, such as pigeon's milk. One of the most infamous early widespread reports of the practice was from the April 2, 1698, edition of the British newspaper Dawks' News-Letter, which reported on a group of people who went to the Tower of London to see a nonexistent ceremonial washing of the lions, a joke repeated annually for centuries to come. "
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