The theme comes from Jaws, the 1975 shark film directed by Steven Spielberg, with music by John Williams. Its simple two-note motif was written to represent the unseen shark, and it quickly became one of the most recognisable pieces of film music ever made. Over time, broadcasters and event organisers adopted it as a light-hearted signal to wrap up speeches, and creators online followed, using it to mock slow moments and build comic suspense.