In 1974, prankster Porky Bickar was so into April Fools, he flew hundreds of tires into a dormant volcano in Alaska and set them on fire - fooling the local populace and coast guard into thinking the volcano was active.
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There is a village in Ireland called Muff, and they have their own diving club.
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According to a study by the National Science Foundation, only half of Americans believe in evolution, and one in 4 don't know that the Earth orbits the Sun.
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If you fake a laugh long enough, you'll actually start to laugh really hard.
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Colorado switched mile marker "420" to "419.99" to stop people from stealing it.
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There's a children's book titled "Where Willy Went" detailing the adventures of a sperm.
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