Online the phrase circulates mainly as a TikTok meme sound, which matches its short three-second length and tags. Brazilian creators use 'eu exu caveira' as a tongue-in-cheek way to claim a dark, untouchable persona for a few seconds, leaning into the cultural weight of the name without telling a longer story. Like many TikTok audios, it spread through lip-syncs, POV skits and edit templates rather than a single viral video, and it endures because the line is instantly quotable and reusable across jokes, entrances and gaming clips.