The pope is asleep in his chambers...
The pope is asleep in his chambers when he's awoken by a great ruckus of shouts and prayers. The conclave of bishops has been studying the scripture and determined something of grave importance: if the pope does not have sexual relations with a woman within the next 24 hours, all of humanity is doomed! Obviously, he's deeply shaken by the news and checks their findings only to discover that they are correct and there's nothing else for it.
A small group of especially discreet priests is assembled to find an appropriate woman for the pope to bed. As they are about to set out upon the streets of Rome, the pontiff gives them his final instructions:
"First, the woman must be blind, so that she will never know with whom she is having relations."
The priests all nod in understanding.
"Second, the woman must be mute, so that she can never tell of what happened."
Again, there are nods of agreement.
"And finally, she must have big tits!"