There was this man who had a dog which he was attempting to train, but alas had very little success. He was on the verge of despair when he happened across a very charismatic evangelist. He unburdened his soul to him, and he promptly informed him to leave the dog with him, and he would have it trained in a jiffy.

The next day the man returns, and asks how the evangelist got on. The reply was positive, and the evangelist calls the dog to give a demonstration. Picking up a stick, he throws it and says, Fetch.

Instantly the dog takes off, grabs the stick and returns. The evangelist says, Drop and the dog drops the stick at his feet.

Roll over, and the dog rolls over. By this time the dogs owner is very excited, and asks if he can have a go.

Sure, replies the evangelist.

Heel, says the owner and the dog lifts one paw, places it on the man and says, I command this sickness to leave you…