The image comes from The Exorcist, the 1973 horror film where Regan MacNeil is possessed, and her pale, scarred face became the visual used in early internet screamer pranks. Flash games, trick links and the scary maze prank would lull viewers with a quiet task, then flash the face with this scream at maximum volume. Shared later on video sites and soundboards, it stayed a shortcut for an instant scare, and fans also compare it to the fnaf 2 scream for its similar hit of shock.
About this sound
The Exorcist jumpscare is a short horror scream paired with Regan's possessed face, used for screamer pranks, scary edits and sudden reaction jokes
This is a brief, piercing scream built for a classic screamer moment, lasting just over a second and hitting at full volume with almost no warning. It is associated with the sudden reveal of Regan MacNeil's possessed face from The Exorcist, flashed on screen while the scream blasts out. The effect is pure shock rather than suspense, designed to make a viewer jump, flinch or laugh at their own reaction. Because it is so short and loud, it works best as a single startling punchline rather than background horror atmosphere.