This sound is associated with Xuxa, one of Brazil's most famous television presenters, whose greeting style became widely recognizable through her TV presence. Short clips of her saying 'bom dia' spread online in meme edits, WhatsApp messages, and nostalgic posts because the delivery is instantly upbeat and easy to repurpose. It remains popular as a Portuguese-language reaction sound for morning jokes, cheerful intros, and ironic good-morning greetings, especially among users who grew up seeing Xuxa on television.