The sound comes from the Gugu Gaiteiro meme called Cepo de Madeira, centred on the Portuguese chant bem duro, bem forte e bem socado. Shared widely as a short audio clip, it became a staple of Brazilian meme edits and reaction videos because its repetitive rhythm is easy to recognise even without understanding every word. Creators keep returning to it for exaggerated strength jokes, lifting clips and playful innuendo, and its short length makes it easy to drop into videos, streams and group chats without breaking the pace of a scene.