Definition from Wiktionary, the free dictionary
- A clichéd conclusion in which all loose ends are tied up and all main characters are content. See also happily ever after.
1930, Russell, Bertrand, The Conquest of Happiness:
- Life is not to be conceived on the analogy of a melodrama in which the hero and heroine go through incredible misfortunes for which they are compensated by a happy ending.
1957 July 6, Mel Blanc as Bugs Bunny, What's Opera, Doc?:
- Well, what did you expect in an opera? A happy ending?
1987, Willy DeVille (music), “Storybook Love” (song):
- And she said: / "Don't you know that storybook loves, / Always have a happy ending."
- (vulgar, slang, used euphemistically) A handjob, especially one after a massage.