UK, 1877—an onion-seller from Brittany who sold onions door-to-door around the coasts of Britain—used with modifying word, ‘Johnny’ designates a person of the type, profession, etc., specified
Australia, 1914—the straight-arm fend-off—from advertisements for J. C. Hutton Pty Ltd, depicting a man putting a hand in another man’s face and saying “Don’t argue—Hutton’s bacon is the best”
USA, 1876: from beginning to end, completely, exhaustively—literal meaning, 1852: all the successive parts of a meal, from soup at the beginning to nuts at the end
UK, 1823 as ‘calf’s head is best hot’, defined by John Badcock as “the apology for one of those who made no bones of dining with his topper on” in Slang. A Dictionary of the Turf, the Ring, the Chase, the Pit, of Bon-ton, and the Varieties of Life
UK, 1898—Australia, 1913—used when, while addressing someone, the speaker is interrupted by someone else—in particular when the person who interrupts is a subordinate of the person whom the speaker addresses
alludes to the menus in Chinese restaurants, which list the dishes in two columns, column A and column B—USA, 1956—first in reference to comedian Buddy Hackett’s routine on a Chinese waiter taking an order
said to console a child choking over his or her food—UK, obsolete—first recorded in A Complete Collection of Genteel and Ingenious Conversation (1738), by Jonathan Swift