Jornal Nacional is TV Globo's flagship nightly news programme in Brazil, and its presenters have opened the broadcast with a calm Boa noite for decades, making the greeting familiar to millions of Brazilian viewers. In online meme culture, short broadcast moments like this are clipped, shared and reused far beyond their original news context, especially in Brazil where the programme is a daily ritual. The sound endures because that formal television voice instantly signals the end of the day, turning a simple goodnight into a shared cultural joke.