After the convent's annual physicals turn up a troubling result, the Mother Superior asks Father O'Reilly to tactfully deal with the matter. They call all the sisters together to make the announcement.
Father O'Reilly clears his throat. "I must tell you all something. We have a case of gonorrhea in the convent."
You could hear a pin drop in the silence, when an elderly nun in the back says, "Thank God. I'm so tired of Chardonnay."