To take an oath, ancient Romans put a hand on their testicles
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Tickling was a form of torture used in ancient China on nobility because it left no mark and recovery was quick.
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Leonardo da Vinci was dyslexic, and he often wrote backwards.
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The first ever patent in the UK was Aaron Rathbone & Roger Burges, Map makers in 1618!
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In 1918, after the treaty of Versailles (end of WWI), the French Commander-in-chief said "This is not a peace. It is an Armistice for 20 years." 20 years and 65 days later, WWII happened.
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The flushing toilet was invented in 1596, not by Thomas Crapper as most people think, but by Sir John Harington.
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Pierre Jaquet-Droz, a watchmaker, 240 years ago invented a robot that could write, and the parts could be interchanged to say whatever you want.
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