After Regan is possessed by a demon, Father Merkin is called to excise the demon. But the regular way doesn't work, and he is forced to perform a "sexorcism". After a while the mother gets in on the act, and there's plenty of green slime for everyone.
What amazes me about this film is not that it exists, but that it took 30 years for someone to think up such a film. Every other film out there gets a porn named after it, but the "Exorcist" somehow escaped all this time. And they found just the right people to make it: Burning Angel. The same director (Doug Sakmann) and actors (Tommy Pistol and Joanna Angel) as their last hit, "Re-Penetrator".
While "Re-Penetrator" was mostly porn with a thin -- very thin -- plot, this one actually goes through a fair amount of effort to keep the original story. Plenty of crucifixes, prayers, casting out of demons, green slime (maybe too much green slime), and other elements. One scene was allegedly even filmed in the same place as the original and they hired a special effects man who worked with the original special effects guy. Doug Sakmann cares about his work.
If you're looking for all the stuff you like in a porn, you'll find it here: plenty of holes filled with things, and different combinations of people and positions. With only three actors there is a limit to this flexibility, but I think they did a decent job in the 40 minutes they were given.
You might find this disgusting (I know at least one person who felt like throwing up), but then again you might love it. Someone in this world loves green slime. But many people love porn, horror and "The Exorcist". And if you're one of those, you might really like this. And if you're like my friend Jason, Joanna Angel will even sign the DVD for you if you order from the website.