The line comes from The Fox (What Does the Fox Say?), the 2013 viral song by Norwegian comedy duo Ylvis, originally created for their television show and released online as a music video. Its absurd premise, asking what sound a fox makes, combined with catchy electronic pop production, helped it spread rapidly on YouTube and social media, gathering hundreds of millions of views. Years later, the question remains instantly recognisable, which is why short clean cuts are still reused in memes, edits and reaction videos.