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TIL the home pregnancy test was invented in 1967 by a graphic designer

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W7NvA TIL Spongebob Squarepants theme song was written by Avril Lavigne, also it was once performed live on stage by Slipknot's Corey Taylor
DQAwV TIL that in 1941 a group of free-thinkers gathered together in a cabin in the woods to perform a black magic ritual to kill Adolf Hitler - and they brought a photographer from LIFE Magazine with them to document it!
b6Mn4 TIL Until the middle of the 20th century, cats tasked with rodent control aboard ships were issued passports, uniquely signed with the imprint of their own paws.
16VaO TIL that “OK” is said to be the most widely spoken word in the world, having been adopted as a loanword in Spanish, Dutch, French, German, Japanese, Korean, Chinese, Russian, Filipino, Vietnamese, Indonesian, and others. However, the etymology of the word is uncertain.
BrEYd TIL that some non-redheaded men have red beards because they have one copy of the MC1R gene. Two copies would make them fully redheads