Tomou dormindo filho, na boquinha circulates mainly as a Brazilian Portuguese WhatsApp audio and short-video meme, where the humour comes from the affectionate, teasing way the line is said rather than from any single famous scene. Because the phrase is short, easy to quote and instantly understood by Portuguese-speaking audiences, creators reuse it as a reaction to sleepiness, boredom and late-night tiredness. It sits naturally alongside other sleep-themed sounds such as snoring meme clips, and it keeps spreading through reaction edits, group chats and reposts that turn a small everyday moment into a shared joke.