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TIL: An interesting yet unexplained phenomenon is that men have erections while dreaming (REM sleep), even when the dream is void of salacious content. The ancient cultures that believed soul flies away during dreams, typically depict dreaming by an erection and a bird flying away from the body.

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jNywX TIL the St. Brice's Day massacre resulted from King Æthelred the Unready's order to kill the Danes in England. This provoked an invasion, which eventually led to the accession of the Danish King Cnut.
4kvrJ TIL Jeopardy! contestant James Holzhauer is the 3rd highest-earning American game show contestant ever at $3.52 million & also holds the single-game winnings record at $131,127. He's the first & only player to win $100,000+ in a single episode and he accomplished this feat six times.
Z8m84 TIL about the fastest animal on earth relative to size, the mite Paratarsotomus macropalpis, whose prey is so fast scientists don't even know what they are, even with the help of high-speed cameras.
AN71o TIL Justin Bieber was banned by Ferrari from buying certain cars because he modified his new Ferrari in his first year of ownership, violating their terms and conditions
QNLyM TIL that the largest prime number discovered as of June 2023 contains 24,862,048 digits.