Acostate a dormir circulates as a Spanish-language TikTok meme sound, shared in short videos where the joke is that someone should already be asleep. The phrase itself is everyday Spanish for going to bed, which is why it travels easily beyond one original clip and works in many late-night contexts. It is most often heard in reaction edits, comedy sketches and messages between friends, where a familiar bedtime warning becomes the punchline. Its appeal comes from that shared experience: almost everyone has been told to sleep, or has ignored that advice while still awake.