Jornal Nacional is TV Globo's flagship nightly newscast in Brazil, and its opening vinheta has introduced the programme for decades, becoming one of the most recognisable sounds on Brazilian television. The familiar greeting 'boa noite' from its presenters, including William Bonner and Fatima Bernardes during their years together on the programme, is closely associated with that nightly ritual. Edited and glitched versions began circulating online as memes, turning a symbol of serious journalism into a punchline for parody videos, reaction clips and satirical news segments.