Noot Noot comes from Pingu, the Swiss stop-motion children's series about a young penguin, whose honking catchphrase became widely recognised online. Meme editors later paired that innocent sound with a sudden loud scare, creating short jumpscare edits shared for pranks and reaction videos. The joke relies on the clash between a familiar children's character and an abrupt horror-style shock, which keeps it popular for surprising viewers who do not expect the volume change.