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TIL porn movie Debbie Does Dallas (1978) is in the United States public domain because copyright notices were absent in the distribued copies

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oMRr TIL that when Perdue Pharmaceuticals made OxyContin crush/melt/tamper resistant in 2010 prescriptions fell 20% nationwide and heroin ODs rose 20%
59Ek TIL that in Middle Age Britain, the church taught that for ‘Godly Congress’ both the man and the woman needed to produce sperm. The only way a woman could produce sperm was to orgasm. All 'ungodly’ sex was frowned upon, so most sex involved maximum effort to produce a strong female orgasm.
6E10X TIL about Risus sardonicus, a spasm of your facial muscles that make you look like you have a devious grin
5YLkB TIL That the animals Americans call "buffalo" are actually not buffalo at all. They are called bison. Buffalo and bison are in the same family, but not closely related.
rRnYW TIL during WWII Germany used 2 ‘Lorenz beams’ to guide bombers at night over the U.K. Bombers followed 1 beam, then, when they crossed the 2nd beam, they dropped their bombs.