Seu Madruga is a character from El Chavo del Ocho, the Mexican sitcom created by Roberto Gómez Bolaños and hugely popular in Brazil under the name Chaves. Played by Ramón Valdés, he is the perpetually broke neighbour who is constantly chased for rent by Señor Barriga and teased by the neighbourhood children. His exasperated reactions became a staple of Brazilian humour, and short clips of his voice now circulate as reaction sounds on memes, videos and messaging apps, where a single sceptical noise can sum up an entire argument.