This sound is best known as a general cartoon confusion effect rather than a clearly credited quote or scene. It circulates widely on short-form video apps, meme edits, and reaction compilations, where editors use it to mark confusion, hesitation, or a sudden mental error. Its appeal comes from how quickly it tells the viewer what the reaction is supposed to be. It is still common because it fits many formats, from gaming clips to skits, and works alongside sounds like Anime Wow or SpongeBob Fail.