The sound comes from the German dubbed version of The Simpsons and features Ralph Wiggum, the cheerful and dim-witted son of Police Chief Wiggum. In German, ente means duck, and Ralph repeating it without context turned a throwaway line into a shareable clip. It spread through meme pages and soundboards where short, out-of-context cartoon lines are reused as reactions. Its appeal lasts because Ralph is such a beloved character and because the word itself sounds funny to both German speakers and listeners who only know it from the clip.