The phrase comes from everyday Brazilian Portuguese, especially the use of trem as a flexible word for a thing or situation in Minas Gerais speech. Online, the short recording circulates as a reaction sound rather than a song or long quote, shared in edits, chats and soundboards because the whole joke fits in about a second. Its popularity rests on timing and tone, letting creators signal that a plan, look or result has gone wrong without adding explanation or pausing the video for dialogue.