Repeated beeping is one of the oldest electronic alert sounds, borrowed from real-world devices like reversing vehicle alarms, digital timers, microwaves and medical monitors. Online, creators turned that familiar annoyance into a meme sound for anything broken, overloaded or urgently demanding attention. Because the pattern is so recognisable without any words, it works across languages and edits, and it is still used for censor gags, glitch effects and fake system alerts in short videos.