Online, this echoed Aa has circulated as a generic disappear and reaction effect rather than a clearly sourced movie or show clip. Creators reuse the long reverb tail because it gives a simple visual gag a clear before and after, the shout for the shock and the fade for the absence that follows. It fits the same editing language as other exaggerated meme hits, especially in short vertical videos, gaming montages and slideshow memes where a person, pet or object is removed mid sentence and the audio is left to finish the joke alone.