Noot Noot comes from Pingu, the stop-motion animated penguin at the centre of the children's television series of the same name. The phrase, delivered in Pingu's distinctive squeaky voice, became his catchphrase and a shorthand for cheeky, mischievous behaviour. As clips of the show circulated on YouTube and later on TikTok, editors began lifting the honk as a standalone reaction sound for pranks, sneaky moments and smug reveals. Its simplicity and instantly recognisable tone have kept it in regular use long after the original series ended.