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Comic strip of a ghost and a person with the American flag pasted on the head. The ghost repeats “Boo!” in the first three panels without getting any reaction, but when it in the fourth panel says “kg, cm, km, °C” the American gets scared and screams “AHHHH!!!”.
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American cars have been using both metric and SAE fasteners since at least the 1980’s. I wish they would just gone all metric so I wouldn’t have to drag out two socket sets anytime I need to do anything.