O Grosso Chegou circulates online as a Brazilian Portuguese meme phrase, with the word grosso used here as a nickname or larger-than-life label rather than a literal description. Its popularity comes from its use in political commentary and reaction content, where the short announcement works as shorthand for a powerful figure arriving or a long-awaited moment finally happening. Because the clip is only a few seconds long and the delivery is instantly recognisable, creators reuse it across short videos, edits and group chats as a reusable entrance cue.