Noot Noot comes from Pingu, the Swiss stop-motion children's series about a young penguin and his family in Antarctica, which first became widely known in the 1990s. Pingu does not speak normal words, so his honking Noot Noot became his most recognisable catchphrase, often used when he is excited, proud, or up to mischief. Clips of the sound spread through YouTube compilations, reaction videos, and meme pages, and later through short-form video apps. It remains popular because it is instantly recognisable, easy to drop into edits, and funny even without context.