USA—‘to look, or to feel, (like) a million dollars’, or ‘(like) a million bucks’: to look, or to feel, extremely good, or extremely attractive (early 20th century)—sometimes used in contrast to ‘like thirty, or 30, cents’: cheap, worthless (late 19th century)
robotically conformist or obedient—from The Stepford Wives (1972 novel by Ira Levin and 1975 film adaptation by Bryan Forbes), in which Stepford is the name of a superficially idyllic suburb where the men have replaced their wives with obedient robots
‘the milk in the coconut’: a puzzling fact or circumstance; alludes to the question of how the milk got into the coconut—of British-English origin (1832), not of American-English origin as stated by the Oxford English Dictionary
originally: a child wearing the house key tied around their neck and staying in the streets while their mother is at work—USA, 1935: a poor Afro-American woman’s child—USA & UK, WWII: a child whose mother was engaged in war industry
USA, 1901—Especially in ‘to have them rolling in the aisles’, the colloquial phrase ‘in the aisles’ is used in various expressions to suggest a wildly enthusiastic reaction, especially uncontrollable laughter, on the part of an audience.
UK, 1832—‘the awkward age’: the adolescence, when one is no longer a child but not yet properly grown up, a time of life characterised by physical and emotional changes—translates in French as ‘l’âge ingrat’, ‘the thankless age’
USA, 1850—indicates that precedence should be given, or deference shown, to an older person—in extended use: an invitation to somebody (not necessarily older) to go first when passing through a door, etc.—pays a compliment to the person giving precedence
USA, 1914—‘ailurophile’: a cat lover—‘ailurophobe’: opposite sense—based on ancient Greek ‘aílouros’, ‘cat’, perhaps from ‘aiόlos’, ‘swift’, and ‘ourá’, ‘tail’, the cat being perhaps so called on account of the swift movement to and fro of its tail
from the notion that even a dead cat will bounce if dropped from a sufficient height—UK, 1981: a rapid fall in the stock market with hardly any reaction—USA, 1985: a rapid but short-lived recovery in the stock market after a sharp fall—hence, 1992: any spurious success
‘a stiff upper lip’: a quality of uncomplaining stoicism—now understood as referring to what is believed to be a quintessentially British trait, the repression of emotion, but originated in fact in North America (USA, 1811)