The origin of this Kid BS clip is not clearly documented, so it circulates online mainly as a standalone reaction sound rather than as a clip tied to a known show or creator. It spread through soundboards and short form edits where a child's blunt disbelief gets a bigger laugh than a scripted line. Editors keep reusing it because the meaning is instant, the timing is short, and it fits almost any tall tale, fake stat or obvious exaggeration without needing setup or explanation for new viewers watching.