The phrase translates as how can you say such a thing, and online it is shared as a standalone Italian reaction clip rather than as part of a longer scene. Its appeal comes from the way the wording is instantly understandable from tone alone, even for listeners who do not speak Italian, which helps it travel across meme pages, short videos and private chats. Because it is under two seconds long, it fits easily into edits, replies and voice-note style jokes, and it remains popular as a quick way to signal disbelief without needing subtitles or explanation.