"A nun in New York" joke

A nun gets into a cab in New York. She demurely says in a small, high voice, "Could you please take me to Times Square?"
In a thick Brooklyn accent the cabbie initiates conversation, "He sista, that's kinda a long drive? You mind if we, like, chat?"
"Why no, my son, whatever is on your mind?"
"About this celibacy thing. Are you telling me you never think about doin'it?"
"Why certainly, my son, the thought has crossed my mind a time or two. I am of weak human flesh, you understand!"
"Well would ya ever consider, you know doin'it?"
The nun thinks a while
"Well, I suppose under certain conditions, in a very unique circumstance, I might consider it."
"Well, what would dose conditions happen to be?"
"He'd have to be Catholic, unmarried and, well certainly he could have no children."
"Sista, today is your lucky day. I'm all three. Why do youse come on up here... I won't even make you really break your vows.
All you gotta do is go down on me."
The nun looks around... They are awfully far away from where anyone would recognize her... at the next light she gets into the
front with the driver. By the next light, the nun is getting back into the rear of the cab, and the cabbie is smiling form ear to
ear. As she settles in, the nun hears the cabbie begin to laugh. She inquires,
"Why, my son, what is so humerous?"
The cabbie sneers, "Sista, I got ya. I'm Protestand, I'm married, and I got four kids."
And from the back of the cab comes the nun's low voiced response, "Yeah, well, my name's Dave and I'm on my way to a
costume party."
Mr TJoke.