USA, 1978—to commit suicide; to demonstrate unquestioning obedience or loyalty—alludes to a mass suicide, in 1978, by members of the Peoples’ Temple in Jonestown, Guyana, who drank a cyanide-laced drink thought to be similar to Kool-Aid
USA, 1918—a mechanic—since the 17th century, ‘monkey’ has been used (frequently with modifying word indicating the occupation concerned) to denote a person engaged in a trade or profession
UK, 1974—applied jocularly to any supposed network of prominent or influential Welsh people, especially one which is strongly nationalistic—a blend of ‘Taffy’, denoting a Welshman, and ‘Mafia’
used of a person who is frozen with fright or surprise, or is trying to flee, as a result of suddenly becoming the focus of attention—alludes to the habit of deer and rabbits of stopping still when dazzled by the headlights of a motor vehicle, or of running away within the headlight beam
UK, 1969—a young man of a working-class subculture, characterised by close-cropped hair, heavy boots and functional clothing, and behaving in an aggressive or violent way—‘bovver’ represents a nonstandard pronunciation of ‘bother’
USA, 1888—used as a way of telling someone that they will have to accept a situation they do not like because they have no choice—the noun ‘titty’ denotes a teat, and, in the phrase, the image is of sucking a tough teat
Australian soldiers’ slang, 1917—literally: to fall heavily; figuratively: to suffer a failure or defeat—‘gutser’ (Scotland, 1901): originally denoted a belly flop—derived from ‘gut’ in the sense of the belly
UK, 1967—something or someone that is utterly ineffectual—especially in phrases such as ‘as much use as a chocolate teapot’—variants: ‘chocolate kettle’, ‘chocolate fireplace’ and ‘chocolate fireguard’
U.S.A, 1932—also ‘the land of nuts and fruits’—a humorous, sometimes derogatory, appellation for the U.S. state of California—refers to California’s agricultural bounties and to Californians regarded as being ‘nuts’, i.e., crazy