* Physical Manifestation of the Demon: The vomiting is portrayed as a way for the demon Pazuzu to physically expel itself from Regan's body. It's a violent and repulsive act, symbolizing the struggle for control between the demon and the possessed girl.
* Symbolic of the Exorcism: The vomiting can be seen as a purging of the evil that has taken over Regan. As the exorcism progresses, the vomiting becomes more frequent and intense, reflecting the demon's weakening grip.
* Psychological Horror: The vomiting is designed to disgust and terrify the audience. It's a primal fear response, tapping into our natural aversion to bodily fluids and the unknown.
* Religious Symbolism: In Christian beliefs, vomiting can be seen as a physical manifestation of sin or demonic influence. This adds a layer of religious horror to the film.
It's important to note that the film is not a realistic portrayal of demonic possession or exorcism. It's a work of fiction that uses these elements to create a sense of terror and unease.
The vomiting scenes in "The Exorcist" are undeniably impactful and have become iconic in horror cinema. They highlight the film's commitment to pushing boundaries and exploring the darkest corners of human experience.