The clip is credited to Peruvian comedian Melcochita, whose loud, expressive style made his catchphrases easy to lift into short online clips. As a Spanish-language reaction sound, “No vayan,” meaning “do not go,” spread through meme edits and WhatsApp-style audio sharing, where a one-second warning could stand in for a whole joke. Its appeal is practical as well as funny: the phrase is instantly understood by Spanish speakers, it needs no context, and it fits the moment just before someone ignores good advice.