Credit Ebad, a gentleman from the midwest, with this one...

A pastor walked into a neighborhood pub that was hopping with music and dancing. Every now and than the lights would go out, followed by an eruption of cheers from the crowd.

When somebody noticed the pastor, however, the revelry stopped and the room got very quiet.

Feeling awkward and out of place, the pastor went to the bartender and asked, "May I please use the rest room?"

The bartender replied, "I really don't think you should."

"For heavens sake, why not?"

"Well, there is a large statue of a woman in there, and I'm afraid it would offend you, being a man of the cloth and all. She is only wearing a fig leaf over her..."

"Nonsense," said the pastor, "I'll just look the other way." And, still feeling very self-conscious in the quiet room he entered the men's room.

After a few minutes he emerged, and the whole place was filled with music and dancing again, and everyone was giving him an enthusiastic round of applause. Several patrons came to him, slapped him on the back, put their arms around his shoulders, and led him to the bar where he was presented with a cold drink, on the house.

"I don't understand," the bewildered pastor whispered to the bartender, "What happened?"

"They know you're one of us now," the bartender replied.

"How?"

The bartender grinned and slid another drink to him. "When the fig leaf on the statue is lifted, all the lights go out."