Noot Noot is the signature call of Pingu, the young penguin from the Swiss-British claymation children's series Pingu, first broadcast in the 1980s. In the show, the nonsense honk replaces ordinary speech, with its tone and rhythm conveying Pingu's mood. Clips of the sound later spread through YouTube, TikTok and meme soundboards, where creators reused it as a short comic sting. Its brevity, clear rhythm and nostalgic link to childhood television keep it popular for reaction videos, edits and playful sound effects today.