Poatan is the nickname of Brazilian MMA star Alex Pereira, and vingança is Portuguese for revenge, which explains why this clip circulates mainly among Portuguese-speaking fight fans and MMA meme pages. Rather than coming from one widely documented viral video, it works as a fan-made celebration sound, passed around in edits, reels and reaction clips whenever Pereira wins or a rivalry gets settled. Its staying power comes from that simple pairing of a famous champion with a revenge storyline, a combination that fits almost any comeback narrative.