Kermit the Frog was named after Kermit Scott, a childhood friend of creator Jim Henson, who became a professor of philosophy at Purdue University.

Coupons were introduced in 1894 when Asa Candler bought the Coca-Cola formula for $2,300 and gave people coupons that he had written out to receive a free glass of coke.

Tennis was originally played with bare hands.

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