1. German chocolate cake is named after a guy named Sam German, not the country. 2. Almost as many people were killed by guillotine in Nazi Germany as in the French Revolution . 3. The creature that kills the most people every year isn't snakes, sharks, or even other humans — it's the mosquito . 4. The Sun City Poms is a cheerleading squad in Arizona that only people 55 or older can join . 5. "What in tarnation?" is literally just another way of saying, "What the hell?" 6. Chainsaws , the horror-movie murder weapon of choice, were invented for aid in childbirth . 7. There's an island in Japan you can visit that's inhabited only by friendly bunnies. Harpo Productions 8. There are actually more public libraries in the US than McDonald's . 9. The last letter added to the English alphabet wasn't Z — it was the letter J . 10. In 1518, a “dancing plague” took over the town of Strasbourg, France.