The phrase isso is everyday Portuguese for that's it or that's right, and repeating it three times turns a plain confirmation into a chant of encouragement. Short voice notes built around a single repeated phrase travel easily between chats and edits because the meaning is clear from the delivery alone, even for viewers who do not know the language. This two-second version has settled into use as a quick reaction sound, shared for moments of agreement, celebration and comic approval where a longer explanation would slow the joke down.