The phrase comes from everyday Portuguese business language, where contracts signal clients, deals and a busy operation. Online, the specific number ten thousand turned it into hyperbole, a shorthand for being impossibly busy or successful. It circulates in Brazilian meme edits and short audio shares, usually detached from any original recording, and gets reused whenever a conversation turns to work, money or status. Its appeal is the contrast between the ordinary office wording and the absurd scale implied.