Nathy Peluso is an Argentine singer and rapper known for a bold, theatrical delivery that clips well into short form video. The phrase la concha is familiar in Rioplatense Spanish as a strong, colloquial exclamation, which helps explain why this tiny excerpt travels so easily as a reaction sound. On TikTok and in meme edits it is less about a full song moment and more about attitude, used to signal disbelief, irritation or amused outrage in under three seconds, often detached from its original context.