A biker goes into a mega church. Typical biker long hair, beard, tatoos, leather jacket, clean but worn jeans and boots. The good church folk inch away from him. After the service the pastor stops him at the door and says "If you come back next week pray and ask God how you should dress when you come to this church."
The following Sunday the biker was back. The pastor stopped him at the door and said, "I thought I told you to ask God how you should dress when you come to this church." The biker said I did, He said "He didn't know, He's never been in this church."
.....Now for a real story. A biker pastor I know visited our somewhat conservative church. He could have been the biker in the above story. He said he visited another local church he wouldn't say which. He was stopped in the foyer and told "You can't come in here. You represent the world and we have separated from the world." Or words to that affect.