Father Flanaghan was visiting the nunnery to deliver some mail to the head nun, when he saw sister Berthe, whose stomach was a little bit bigger than usual.

“Is there something wrong with your stomach?” he asked.

“No,” she replied, “it's just a little stomach gas.”

A few weeks later, he visited again, and her stomach was even bigger. “Are you sure it's only gas?” he asked.

“Yes,” she replied, “I'll get over it soon.”

A few months later, Father Flanaghan visited the nunnery, and saw Sister Berthe pushing a baby carriage. Leaning over it, he said, “Cute little fart.”