Noot noot is the signature honk of Pingu, the mischievous baby penguin from the Swiss-British stop-motion series Pingu, created by Otmar Gutmann and first broadcast in 1986. Pingu speaks a gibberish 'penguin language', and his catchphrase is produced by shaping his beak like a megaphone and honking through it. Clips of the honk became an early internet meme in the 2000s and spread across forums, ringtones and soundboards. The goodnight variant is a fan favourite for ending chats and videos, turning a bedtime farewell into a nostalgic joke.