Who made the first aeroplane flight? How many legs does an octopus have? How much water should you drink every day? What is the chance of tossing a coin and it landing on heads? What happens if you leave a tooth in a glass of coke overnight? What is house dust mostly made from? What colour are oranges? Who in the world is most likely to kill you? What was the first dishwasher built to do? John Lloyd and John Mitchinson, the brains behind QI, here present a wonderful collection of the most outrageous, fascinating and mind-bending facts, taking on the popular General Ignorance round from BBC1's top rated quiz and the first book in the bestselling series. And whatever your answers to the questions above, you can be sure that everything you think you know is wrong.