One day, a nun falls pregnant.

One day at a Monastery, a nun discovers that she has somehow become pregnant. Horrified by this development, the Nun immediately runs to the head nun and explains to her what has happened.

'Mother Superior, I have terrible news," she tells her, "I have no good explanation for how it has happened, but I've discovered that I have somehow become pregnant. I've stayed faithful, I've never been with a man before. I don't know how this happened."

"Sister Anna, despite what you say, it's simply impossible for this to have happened without you having had sex with a man," replied Mother Superior, "I'm sorry but I've no choice but to make you leave the sisterhood." With this, Sister Anna is stripped of her nun status and forced to leave the monastery.

The same thing happens the following week. Sister Mary discovers that she, too, has somehow becomes pregnant. She repeats the same process, telling Mother Superior the exact same thing as Sister Anna, but is met with the same response, and is stripped of her nun status and forced out of the monastery.

The following week, Sister Suzanne suffers the same fate. When she tells Mother Superior, she is met with the same fate as the other two.

"Although it is surprising to me that this has been happening so much lately, it's simply impossible that there is any answer of than the three of you have had sex with a man," Mother Superior tells her. "It pains me deeply, but like the other two, I must strip you of your status and you must leave."

The next week, the same thing happens, except this time, it is Mother Superior who becomes pregnant. Surprised and confused by this development, she calls Sisters Anna, Mary, and Suzanne back to the Monastery and reveals to them what has happened.

"I'm sorry for not believing all of you before," she tells them, "but it seemed impossible for there to be any other answer. Now that I know of you're faithfulness, you will be allowed back and your title restored. But the next step now... is to find the bastard who is jerking off onto all of the Monastery candles".