Decaffeinated coffee is not 100% caffeine free. When coffee is being decaffeinated, 2% of the caffeine still remains in it.
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If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee.
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Caffeine boosts memory.
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McDonald's did away with its spoon-shaped coffee stirrers because people were using them as cocaine spoons.
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You can overdose on caffeine.
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In 1943, a Pan Am Airline chef snuck whiskey into passengers' coffee to warm them up on a winter flight. When asked what kind of coffee they were being served, he improvised "Irish Coffee," creating the now-famous cocktail.
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