The phrase is Brazilian Portuguese slang, roughly asking if Souza is stuttering, and the clip circulates online as a reaction sound rather than a scene with a confirmed source. Short voice memes like this spread through group chats, edits and soundboards because the meaning is clear even from the tone alone. The Souza name gives it a specific, personal feel, as if aimed at one flustered friend, which makes it easy to reuse whenever anyone else trips over a sentence in a video, livestream or voice note.