At the store I worked in just before I left London - a branch of Wholefoods Market - we used to give our wastage bread and vegetables to local charities at the end of the evening. This one, called The Jesus Army, claimed to be giving the food to the homeless, but we found out that they were only giving it to them if they agreed to come in to their church and listen to their sermons. Not particularly Christian.
So we decided to stop giving it to them. Unfortunately, the manager on duty the night that Jesus Army guy came in was me, and I had to feed him the line that we were re-evaluating our wastage procedures so wouldn't be giving any out.
Of course, I was pretty Goth-y back then. While I was talking to him, the guy just stared at my pentagram (that I had around my neck). "Do you know what that symbol means?" he asked. I explained that it wasn't in fact Satanic, and that it actually represented the five elements - earth, fire, water, air and spirit. He grabbed my hand and said "In the name of Jesus Christ I compel ye evil spirits: LEAVE THIS MAN!"
I was having none of this. So, in my best growly voice I hissed at him: "I LIKE MY SPIRITS THE WAY THEY ARE, BOY!"
I have never seen anyone run away so fast. He never came back, either.