The censor beep originated in broadcast television and radio, where producers needed a simple way to remove profanity and other unsuitable language before a programme reached its audience. As online video grew, creators adopted the same sound for YouTube, TikTok and livestreams, using it to keep videos advertiser-friendly while still signalling that something cheeky had been said. It remains popular because it is instantly understood across languages and cultures, needs no explanation, and turns a restriction into a recognisable comic device.