The Pope and one of his top cardinals take a long train ride one day. The Pope is doing a crossword puzzle, and the cardinal is reading the Bible.
Suddenly, the Pope asks the cardinal, "What's a four-letter for 'woman' ending in u, n, t?"
The startled cardinal stammers for a bit, then said, "Uh, er, aunt! Yes, aunt!"
"Oh, of course," says the Pope, "Got an eraser?"