There's a blogger I like out of South Dakota. I found this joke on his blog:
A cab driver picks up a nun. She gets into the cab and the cab driver won’t stop staring at her. She asks him why he is staring at her and he says, “I have a question to ask you, but I don’t want to offend you.” She answers, “my dear son, you cannot offend me. When you’re as old as I am and have been a nun as long as I have, you get a chance to see and hear just about everything. I’m sure that nothing you can say will offend me.” So the guy gets very excited and says, “I have always had a dream of getting a very passionate kiss from a nun. I know it sounds weird, but it’s true.” The nun tells him two things. He must be Catholic and he must be single. The guy says “Perfect. I am single, and I am Catholic.” So the cab driver pulls into an alley and he fulfills his dream of a long passionate kiss from a nun. When he gets done, the cab driver starts crying. The nun says, “my son, why are you crying?” The cab driver says “forgive me sister, but I have sinned. I lied. I must confess, I’m married and I’m Jewish.” The nun says “that’s okay. I must also confess. My name is Kevin and I’m headed to a Halloween party!!!”