Moshi moshi is the standard Japanese greeting for answering the telephone, and daijoubu desuka is a polite way to ask if someone is all right. Combined, the phrase became a familiar meme sound online, especially in anime fan spaces and Discord servers where short Japanese voice clips are shared as reactions. Its popularity comes from the contrast between the cheerful phone greeting and the concerned question that follows, letting users greet someone and check on them at the same time without needing any extra context or explanation for the joke to land instantly.