Little is documented about who first recorded Credo Zé Aaaii or where the original clip came from, so its history is mostly an online one. The short Portuguese phrase and drawn-out scream made it easy to lift, repost and drop into other videos, which helped it circulate as a reaction sound on soundboards and in WhatsApp-style meme edits. Because the emotion is clear even without understanding Portuguese, creators keep reusing it for disgust, shock and comic pain, and the name is usually written just as it sounds.