Mamonas Assassinas were a Brazilian rock band fronted by Dinho, whose energetic stage presence and humour made them hugely popular in Brazil during the mid-1990s. After Dinho and the other band members died in a plane crash in 1996, fans kept their music and catchphrases alive through tributes, cover performances and online clips. 'Obrigado Dinho' has since become a simple fan expression of gratitude, shared in comments, edits and short videos that celebrate the singer and the band's brief but lasting impact on Brazilian pop culture.