Father Gabriele Amorth has been the Vatican's chief exorcist for the last 25 years. He's come across some 70,000 demonic possessions. Amorth says the sex abuse scandals that have rocked the Church lately is evidence that the Devil is within the Vatican itself.
Amorth also claims that a number of the possessed he's encountered "spat out nails or pieces of glass." "Anything can come out of their mouths – finger-length pieces of iron, but also rose petals," he says.
Well this is most interesting. If humans--whose mouths and guts are devoid of the said materials--actually can be shown to produce nails, cullet, bolts?, bullets?, lava?, flowers and what have you, then this would be a truly incredible phenomenon meriting study and investigation from a host of disciplines. Hell, this would mean that Hell might actually be real!
To kickstart the investigation I've got a suggestion. The next time Amorth rushes to exorcise a human Gatling gun, I urge him to bring along two conjurers/magicians. No need for scientists. They'll just be a hindrance. A couple of seasoned illusionists will do just fine. Let them stick around, poke around, and check out the (purportedly) possessed and the (supposed) projectiles shooting out of them. I bet you a thousand dollars they'll come back home yawning. While Amorth will continue to insist that demons and possession are as real as the brew of delusions his brain is marinated in.