A hippie gets onto a bus and sits next to a nun in the front seat. The hippie looks over and asks the nun if she would have sex with him. The nun, surprised by the question, politely declines and gets off the at the next stop. When the bus starts on it's way the driver says to the hippie, "I can tell you how you can get that nun to have sex with you."
The hippie says that he'd love to know, so the bus driver tells him that every Tuesday evening at midnight the nun goes to the cemetery and prays to God. "If you went dressed in a robe and glow in the dark paint mask she would think you are God and you could command her to have sex with you."
The hippie decides this is a great idea, so that Tuesday he goes to the cemetery and waits for the nun to show up. Sure enough, at midnight the nun shows up and begins praying. The hippie jumped out from hiding and says, "I AM GOD! I have heard your prayers and I will answer them, but first you must have sex with me."
The nun agrees but asks for anal sex so she might keep her virginity because she is married to the church. The hippie agrees to this and has his way with the nun.
After the hippie finishes he stands up and rips off the mask and shouts, "Ha! Ha! Ha! I'm the hippie!!"
Then the nun jumps up and shouts, "Ha! Ha! Ha! I'm the bus driver!"