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In 1962, laughter was literally contagious……… and nobody was telling jokes. Three girls at a Tanzanian school started laughing and couldn't stop. It spread to 95 students. Then entire villages. Thousands of people. The school had to shut down…… which, honestly, sounds great until you realize nobody was having fun. Crying. Fainting. Screaming between the laughs. Some people couldn't stop for six months. Doctors showed up, ran every test……. and found absolutely nothing. Not one foreigner caught i