Rewind effects became a staple of film and television editing once tape and digital tools made it easy to play audio and video backwards. The reversed whoosh, sped-up voices and ticking clocks signalled that time itself was moving in reverse, a convention later adopted by cartoons, games and online videos. On short-form platforms the sound is now used less for literal time travel and more as a punchline, letting creators erase an error, replay an embarrassing moment, or return to the start of a scene in under a second.