Short prank reaction sounds like this spread through soundboards and short video edits because they are instantly readable without any context. The drawn out awww shape works like a cartoon gasp, so editors place it wherever a character or friend should sound stunned, similar to a shocked sound used for reveals. It has stayed popular for pranks specifically because the volume does half the joke, turning ordinary startled moments into shareable clips that loop well and can be dropped into almost any funny sequence without explanation or setup from the creator.