UK, 1860—very much, very intensely—‘billy-o’ occurs only in this phrase—it is apparently composed of ‘Billy’, pet form of the male forename ‘William’, and the suffix ‘-o’, used to form slang and colloquial nouns, adjectives and interjections
Australia, 1927—very drunk; sated with food—‘goog’, Australian-English slang for an egg, was perhaps formed on the sense of ‘gog’ in ‘goosgog’, denoting a gooseberry
Australia, 1982—a stretch of Oxford Street, in Sydney, which is the city’s main gay district—refers to the use of Vaseline to ease anal intercourse, and based on the alliteration in /v/
19th century—refer to two handkerchiefs, one used as a clothing accessory, the other for blowing the nose—hence, figuratively ‘for display rather than for use’ and ‘one for display and one for use’
USA, 1976—the outcome of a situation cannot be assumed—may allude to the stereotype of a large female soprano singing the final aria of an opera—from ‘church ain’t out ’till the fat lady sings’ (1976), itself from ‘church ain’t out until the singing is over’ (1872)
a representation of the letter A in scarlet cloth which Hester Prynne is condemned to wear in The Scarlet Letter (1850), by Nathaniel Hawthorne—soon came to be used figuratively in the sense of a stigma, a mark of infamy
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
UK—1879 “where the monkey put the shells”—1892 “where the monkey put the nuts”—with reference to the anus, this slang phrase expresses contemptuous rejection