Boa noite is the traditional opening greeting of Jornal Nacional, the flagship nightly news programme on Brazilian network TV Globo, presented for many years by William Bonner. The two-word greeting is heard at the start of every broadcast, making it one of the most familiar sounds in Brazilian television. Online, Brazilian creators have clipped and shared it as a shorthand for serious news, using it to open parody bulletins, reaction videos and social media edits. Its staying power comes from that instant recognition: even without any visuals, listeners immediately picture a news desk and expect an important announcement to follow.