The Oompa Loompas come from Roald Dahl's 1964 novel Charlie and the Chocolate Factory, where they work in Willy Wonka's factory and sing after each spoiled child meets a sticky end. The 1971 film Willy Wonka and the Chocolate Factory turned those verses into memorable musical numbers, and clips later spread online as reaction memes. The misspelling umpa lumpa and humpa lumpa also became common search terms. The song endures because its cheerful scolding fits any video where someone ignores advice and faces instant, funny consequences.