Let's just dissect the second paragraph that a third grader wrote on Wikipedia for The Exorcist (film) as August 12, 2013:
“In Georgetown, Washington D.C., an actress named Chris McNeil (Ellen Burstyn) notices that her daughter Regan McNeil (Linda Blair) is acting strangely, including constant swearing, abnormal strength and causing her bed to shake. After Dr. Klien (Barton Heyman) fails to solve the problem with Ritalin, Regan is given a few unpleasant operations, but X-rays results prove “negative” much to the confusion of Klien and his fellow doctors. In truth, Regan is now possessed via an Ouija board by Pazuzu, who pretended to be Regan's imaginary friend “Captain Howdy.”
Yeesh,
Father B