English Alternative forms lightbulb joke Noun English Wikipedia has an article on:lightbulb jokeWikipedia light bulb joke (plural light bulb jokes) Any joke of the form "How many X does it take to change a light bulb?" followed by a witty riposte, where X is some usually stereotypical class of people. Translations type of joke Finnish: lampunvaihtovitsi German: Glühbirnenwitz (de) m Wikiwand - on Seamless Wikipedia browsing. On steroids.