The phrase comes from Spanish football fan slang, with no te lo creo meaning I cannot believe it, and it spread as a short reaction clip in football edits and meme pages built around Mbappé moments. Because the player is known for explosive pace and decisive goals, fans attach the shout to highlights that look almost staged or impossible. The clip travels well without context, since the tone alone signals shock, so it now appears under gaming clips, trick shots and other sports highlights far beyond Mbappé matches themselves.