Mamonas Assassinas were a Brazilian comedy rock group who became hugely popular in 1995 with their self titled debut album, mixing rock, pop and regional styles with joke lyrics sung in Portuguese. Ser Corno Ou Não Ser plays on the slang word corno, meaning a cheated partner, and twists the famous Hamlet question to be or not to be into a relationship joke. The band's career was cut short by a plane crash in 1996, but their songs remain staples of Brazilian humor, shared in memes, group chats and nostalgic edits.