The tone comes from the alarm sounds built into Apple phones, where it is one of the familiar options people choose to wake up each day. Because millions of people hear a version of it every morning, it has become instantly recognisable online as shorthand for waking up, being late or getting out of bed. Soundboard and video creators reuse the short clip to recreate that moment without filming a real phone, and it stays popular because almost every viewer has heard it, felt the urge to turn it off, and immediately understands the joke.