your terraced house; not just the make of car you drive, but whether you wash it yourself on Sundays, take it to a car wash or rely on the English weather to sluice off the worst of the dirt for you. Similar fine distinctions are applied to exactly what, where, when, how and with whom you eat and drink; where and how you shop; the clothes you wear; the pets you keep; how you spend your free time; and, especially, the words you use and how you pronounce them.