This sound comes from the German YouTube Poop scene, known as YouTube Kacke, which re-edits clips from children's television into intentionally nonsensical jokes. Here the source is Peppa Wutz, the German version of Peppa Pig, and the voice belongs to Schorsch, Peppa's younger brother. The file is marked as sped up, a common YouTube Poop trick that makes a familiar voice sound frantic and funny. Short, unfinished-sounding lines like this travel well in meme edits because they can be dropped into almost any reaction without needing context from the original episode.