The phrase dormir tranquilo is common Spanish and Portuguese for sleeping peacefully, and short clips using it circulate online as reaction audio rather than as a song or film quote. Creators reuse it on TikTok, WhatsApp and meme edits to signal switching off, much like snore mimimimimimi clips play sleep for laughs. Its popularity comes from that simple contrast, applying a serene instruction to messy real life moments, exam stress, work group chats and late night arguments where rest is the joke and the solution people actually want.