A woman starts dating a doctor

A woman starts dating a doctor. Before too long, she becomes
pregnant and they don't know what to do. About nine months
later, just about the time she is going to give birth, a
priest goes into the hospital for a prostate gland
infection. The doctor says to the woman,
"I know what we'll do. After I've operated on the priest,
I'll give the baby to him and tell him it was a miracle."

"Do you think it will work?" she asks.
"It's worth a try." he says. So, the doctor delivers the
baby and then operates on the priest.
After the operation he goes in to the priest and says,
"Father, you're not going to believe this.".
"What?" asks the priest, "what happened?".
"You gave birth to a child!".
"But that's impossible!" says the priest.
"I just did the operation," insists the doctor, "it's a
miracle! Here's your baby."
About fifteen years go by, and the priest realises he must
tell his son the truth. One day, he sits the boy down and
says,
"Son, I have something to tell you. I'm not your father."
The son says,
"What do you mean, you're not my father?" The priest
replies,
"I am your mother. The archbishop is your father.".