In Brazil, WhatsApp voice notes have become a meme format of their own, with short, relatable audios passed from group to group and eventually uploaded to soundboards. 'Tá tarde e eu vou dormir' belongs to that wave: a simple goodnight message that works because almost everyone has sent or received one. Its exact original sender is unknown, which is typical for these viral audios. It spread as a reaction clip for ending conversations, and it endures because late-night chats never stop happening.