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Potato chips
Chef George Crum invented a popular snack in 1853. When one of his customers complained that his potatoes sliced too thick slices, he took the potatoes, cut her thick slices almost paper-thin and fried. Thus there were chips.
The most frequently performed song in the world - «Happy birthday to you» - is protected by copyright.
Cats never mew each other. This sound - especially for men.