This proverb means that promises and plans must be put into action, otherwise they are useless. The early versions did not refer to hell or the road to hell being paved, but to hell being full of good desires, intentions, meanings, etc.
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’
Australia, late 1920s—With reference to the slogan used in newspaper advertisements for Minties (peppermint-flavoured sweets), the phrase ‘it’s moments like these’ is applied to anyone in extremity, and the name ‘Mintie’ denotes a source of comfort.
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’
USA, 1982—a catchy song or melody that keeps repeating in one’s mind, especially to the point of irritation—loan translation from German ‘Ohrwurm’—original meaning (1598): an earwig
Australia, 1941—‘apples’ is used in phrases such as ‘everything’s apples’, meaning ‘everything is all right’—perhaps from ‘apple-pie order’—may have originated in the Australian armed forces’ slang during World War II
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