Quem foi circulates online as a short reaction audio rather than as a line tied to a widely documented film, show or song, so its appeal comes from the phrase itself. In Portuguese, the question is an everyday way to ask who did something, which makes it instantly usable in jokes about blame, accidents and harmless pranks. Creators reuse it because it is brief, clear and easy to drop into a clip, and listeners recognise the questioning tone even without subtitles or extra context.