USA 1920: ‘to have the brains of a goldfish’ (to have limited intelligence)—USA, 1958: ‘to have the memory of a goldfish’ (to be unable to retain information or memories for any significant length of time)
American English, 1874—used in particular of stupidity, as in ‘dumb as a bag of hammers’ and variants—the underlying notion is probably that anything is dumb that does all the hard work
Britain, 1747: dew of the kind that settles on mountains—Scotland, 1816: whisky or other spirit, especially when home-made or illicit (originally in reference to whisky distilled in the Highlands, i.e., in the mountainous region of Scotland)
USA, early 1930s—adjectives—‘little-girl-lost’: resembling (that of) a small girl who has lost her way—‘little-boy-lost’: resembling (that of) a small boy who has lost his way
U.S. slang, 1986—a march into or out of a police car, courthouse, etc., that a person in police custody is made to perform for the benefit of the news media—‘perp’: shortening of ‘perpetrator’
1687—a lengthy and tedious reprimand—from the verb ‘job’ (1666), meaning: to reprimand in a long and tedious harangue—with allusion to the lengthy reproofs addressed to Job by his friends in the Book of Job