1546—originally designated the period of time following a wedding, and arose from the comparison of the mutual affection of newly-married persons to the changing moon, which is no sooner full than it begins to wane
Australia, 1951—used of someone who has departed and left no indication of their present whereabouts—purportedly from the story of one Malley, who was told by his boss to hold a cow; on the boss’s return, the cow had disappeared, and Malley said “She’s a goner!”
This phrase is applied to someone who is very strong and resilient in the face of hardship or pain. It originated in the USA in 1918; it has been used in British English since 1933.
USA, 1990—a persistent or indefatigable person or phenomenon—refers to ‘Energizer Bunny’, the name of a battery-operated toy rabbit represented as never running out of energy, featured from 1988 in a television advertising campaign for batteries
Since the mid-20th century, with reference to garden tea parties, the phrase ‘cucumber sandwiches on the lawn’ and its variants have been used to characterise traditional Englishness.
means that, if one is unaware of an unpleasant fact or situation, one cannot be troubled by it—coined by the English poet Thomas Gray in An Ode on a Distant Prospect of Eton College, first published in 1747
UK, 1918—a malediction, typically uttered as a parting shot after a quarrel—seems to have originated as one child’s threat to another—the reason the word ‘rabbit’ was chosen is unknown