Imbrochavel comes from Brazilian internet slang, where the made-up adjective plays on the verb brochar and is used to claim someone cannot be knocked down or embarrassed. The phrase spread through short-form video, reaction edits and political humour, where its over-the-top macho tone made it easy to remix and quote out of context. It stuck because it sounds both aggressive and ridiculous, so creators still use it as shorthand for unearned confidence, whether the joke is about politics, sport, gaming or everyday bragging.