What's the Difference Between Snot and Bogeys? is packed with brilliant explanations about what the difference is between a meteor and a meteorite, a germ and a virus, rugby league and rugby union, and much more besides. This mad miscellany is for anyone who has found themselves pondering the exact qualities that make a stoat a stoat, and not a weasel, or what makes a bear grizzly (rather than grisly).