The phrase comes from Brazilian internet slang, where seloko compresses cê é louco into a single exclamation of disbelief and num compensa adds a blunt verdict that something is not worth the trouble. Shared as a short TikTok audio, it spread through reaction videos and meme edits in which creators use the two-second line as a punchline rather than a full explanation. Its appeal is its brevity and flexibility: the same clip can dismiss a bad deal, a dangerous stunt, or an exhausting plan without needing subtitles for Brazilian viewers.