KakaoTalk is a South Korean messaging app that became widely used after its launch in 2010, and its notification sounds became instantly recognizable to many mobile users. Online, this short alert is commonly reused in comedy edits, texting memes and phone-screen skits to suggest a new message without extra setup. Its staying power comes from how quickly listeners understand the cue: one brief chime can signal interruption, suspense, embarrassment or news in less than a second.