USA, 1966—a (13th-birthday) party held for a dog—a blend of ‘bark’ (the sharp explosive cry of a dog), and of ‘bar mitzvah’ (the coming-of-age ceremony for a 13-year-old Jewish boy), or ‘bat mitzvah’ (the equivalent ceremony for a Jewish girl)
USA, 1975—to hastily or furtively leave a restaurant, cafe, etc., in order to avoid paying for one’s bill—also used as a noun, especially as a modifier—has also been used of meals eaten quickly
Australia, 1937—very scarce—‘rocking horse’: a toy horse mounted on rockers or springs for a child to sit on and rock to and fro—this phrase has come to be also used in British English and American English
USA, late 19th century—these phrases a) express mild remonstrance towards a person who has left a door open, exposing others to a draft; b) indicate that a person is behaving in a rude or uncouth manner
USA, 1992 (1981?)—adjective: primarily but not strictly vegetarian—noun: a person who follows a primarily but not strictly vegetarian diet—a blend of ‘flexible’ and ‘vegetarian’
1890s—to use extravagant words or language not substantiated by fact; to talk nonsense—occurs in particular in stories by the British authors Ernest William Hornung (1866-1921) and Pelham Grenville Wodehouse (1881-1975)
a word with two opposite or contradictory meanings—coined by Jack Herring in 1962—Joseph T. Shipley had developed the same notion in Playing With Words (1960); he called it ‘autantonym’
with reference to the Jewish prohibition of the eating of pork—‘as scarce as pork chops in a Jewish boarding house’ (USA, 1907) means ‘extremely rare’—‘like a pork chop in a synagogue’ (USA, 1915) means ‘out of place’; also ‘unwelcome’ or ‘unpopular’
Australia, 1985—a person who espouses socialist ideals while enjoying a wealthy lifestyle—coined after the synonymous expression ‘champagne socialist’—popularised by Emerald City (1987), by the Australian playwright David Williamson
Australia, 1928—an outstandingly good person or thing—variant of the synonymous jocular expressions, of U.S. origin, based on various parts of animals’ real or fanciful anatomy and other attributes, such as ‘the bee’s knees’ and ‘the cat’s whiskers’