P.
You ask,
Are you saying that every time I fart I excorsize a demon from my rectal cavity??
You wish! It has been suggested that everytime you kick a demon out, there is some natural emission, belching, farting, vomiting, yawning, coughing, sighing. But, those natural emissions could be natural. If you are a scoffer, your demons send the fart out alone, and keep themselves inside you, messing with your ability to think. Or so the theory goes.
Cheers.