The alert itself comes from classic Nokia phones, where the beeping pattern spells SMS in Morse code and became the default text tone for a generation of mobile users. Its link to Schoolboy Runaway grew through short gameplay clips shared online, where the stealth game about a boy sneaking out after being grounded turned ordinary phone sounds into a cue for getting caught. Players kept reusing the clip outside the game, and the short duration and instant recognition made it ideal for edits, compilations and notification pranks.