WhatsApp grew into one of the world's most widely used messaging apps, and its short message alert became familiar to millions of people who hear it dozens of times a day in real life. Because that sound is tied to everyday chatting, creators began lifting it into short videos, memes and pranks to imitate a phone buzzing at exactly the wrong moment. It has stayed popular because the joke needs no explanation: almost anyone who has used a smartphone instantly understands that a message has just arrived.