A nun catches a ride in a taxi. As the taxi is going along, the nun notices that the cab driver keeps looking at her in the rearview mirror.
She says, "What is it my son?"
The cabbie replies, "Oh, I’m too embarrassed to say, sister."
She says, "Please, feel free to say anything, I’ve been a nun for many years and not too many things surprise me anymore."
The cabbie says, "Well, I’ve always had this fantasy of getting a blow job from a nun. I’m sorry sister, I feel so ashamed."
"That’s OK my son, I know well the needs of the flesh. I will do it on two conditions: one, that you are Catholic and two, that you are not married."
The cabbie says, "Yes on both conditions!" So they drive around the corner to a spot where the nun takes care of the cabbie.
As they continue on their way, the nun notices the cabbie is crying.
She says, "What’s wrong, my son?"
He says, "Sister, I lied. I’m Jewish and I’m married!"
She says, "That’s okay. My name’s Steve and I’m on my way to a costume party!"