Sister Colleen went into the grog shop and bought a quart of whisky from Murphy, the proprietor. "'Tis for Mother Superior," she said, "for her constipation."

Later that afternoon as Murphy made his way home he found Sister Colleen sitting on a park bench singing away, empty bottle beside her and obviously drunk out of her tree. "Sister Colleen," he said with a shock, "I thought you said the grog was for Mother Superior's constipation?"

"Aye," said Sister Colleen, "and won't she be shittin' when she sees me?"