A young priest was just about to enter the church for mass when the old priest who usually conducted services came out, sweating and looking nervous.

"What's wrong father?" the young priest asked.

"I can't do it again. I just can't do it. You ... you must conduct mass today young man."

"But I've never done mass before. What's wrong, are you ill?"

"No, no, it's not that. It's Sister Greene. She makes it impossible! I must go. Good luck young man." And with that the old priest rushed away.

"Who is Sister Greene?" the young priest wondered. He entered the church and walked up to the pulpit and began to conduct mass to the best of his abilities, though he was clearly nervous. As he continued, he noticed one of the Sisters sitting in the front pew. She was smiling at him, coyly. He then noticed that she was slowly but surely pulling her habit up and up, revealing more and more skin. He started stammering and becoming forgetful. Finally, she pulled the garment all the way over her knees, and started slowly spreading her legs. Now the young priest was really having difficulties. Fortunately, there was a break in the service and while the congregation was in prayer, he leaned over to whisper to the alter boy standing next to him, "Excuse me, but is that Sister Greene?"

The alter boy peered over at the Sister, who had not changed her provocative position and replied, "No, I think it's just the lighting in here, Father."