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TIL that not only was Jingle Bells not originally a Christmas song, it was originally written for and sung in a minstrel show by performers in blackface

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Rk4l TIL The first American in space, Alan Shepard, said “Don’t fuck up, Shepard” before launch. This is now known among aviators as Shepard’s prayer
nRdP TIL: Coyotes ‘play’ with skunks in order to get sprayed and camouflage their scent making it easier to stalk other prey.
m1JEO TIL, screensavers were created to avoid images getting permanently burned into the phosphorescent screens of CRT monitors
m1WAP TIL that MythBusters accidentally made an explosive so powerful that they destroyed the footage and alerted the Defense Advanced Research Projects Agency (DARPA).
QjKE TIL in 2005, Sony illegally installed rootkits on 22 million computers to prevent the users from ripping copyrighted music, and could not be uninstalled. It also reported user’s listening habits back to Sony. Ironically, the code itself contained open source software, and so infringed copyright.