Chaves is the Brazilian version of El Chavo del Ocho, the Mexican sitcom created by Roberto Gómez Bolaños in the 1970s. In Brazil the dubbed episodes aired for decades and classroom scenes with Professor Girafales became especially quotable. His frustrated zero grade line spread beyond television through reruns, fan pages and messaging apps, turning into a shorthand reaction for bad answers. It remains popular because generations grew up hearing the same delivery, so a few seconds instantly evoke school, nostalgia and comic disapproval.