Pingu is a Swiss stop-motion children's television series that first aired in 1990, following a young penguin living in Antarctica with his family. Its wordless humour and distinctive honking voice made the character easy to recognise around the world, and clips of the show later became popular online. The outro, with its cheerful closing theme and final Noot Noot, became a familiar meme sound on YouTube and TikTok, where creators reuse it to end videos on a nostalgic, upbeat note.