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’
Australia, 1952—the first in line; the first in a series of people or things to arrive or appear; the first to take advantage of an opportunity—refers to cab ranks (i.e., designated areas where taxicabs line up to wait for business), which operate on a first come, first served system
USA, 1896—one-word form representing a colloquial pronunciation of the phrase ‘hell’s a poppin’’ (1875)—meaning: ‘events are unfolding in a chaotic manner’; ‘a state of confusion and disarray is taking hold’—the verb ‘pop’ means ‘to suddenly break open’
USA, 1893—utterly despicable—jocular extension of ‘lower than a snake’—refers to the use of ‘low’ to mean ‘despicable’, and to the use of ‘snake’ to denote ‘a treacherous or deceitful person’
North-American colonies, 1737—to walk in a swerving, unstable manner—especially used of an inebriated person’s gait—refers to ‘Virginia fence’, denoting a fence consisting of sets of wooden rails that interlock in a zigzag fashion
1906—a familiar name jocularly given to a fanciful deity reputed to be in command of the weather—especially occurs in the phrase ‘send it down, Hughie!’, used to ask that deity to send the rain down from the heavens—also, in the surfers’ lingo: the god of the waves
UK, 1821—‘we’ used in place of ‘I’ by a monarch or other person in power, also (frequently humorously) by any individual—originated as a loan translation from French ‘nous royal’, as used of Napoléon Bonaparte by Madame de Staël in her memoirs published in 1821