띵띵 (dding-dding) is the Korean onomatopoeia for a small bell ringing twice, the sound of shop doorbells that chime when customers walk in. Clips of this chime circulate online as a free sound effect for creators who want a friendly alert without using a harsh buzzer. Because the two-note pattern is instantly recognisable, it works as a transition sting, a notification stand-in or a punchline accent in short videos. Its gentle, old-fashioned ring has kept it popular long after harsher digital alerts took over phones.