The woman featured in this ad parodying The Exorcist movie is not really possessed by the devil. The Dirt Devil Vacuum being used by the granny in the upstairs apartment is sucking the flailing girl to the ceiling. This is of course trying to emphasize the great suction power of the Dirt Devil Vacuum.
The creative folks did an outstanding job in sticking to the authenticity of the Exorcist movie. Although no spinning heads or green vomit appeared in the spot. Also, the build up to the climax of the spot took quite a while to get to.
Finally, as I always try to do in every post that I write, I let you know who the ad agency behind the ad is. The production company behind this highly entertaining spot is Filmakademie Baden-Württemberg out of Germany. Also, I was alerted by one of my readers that the man behind the creative is a student and according to ADVERTOLOG's credits his name is Andre Price.