Sister Mary Katherine lived in a nunnery, a block away from Jack's liquor store in Dublin…
One day, she came into the store and said, “Oh Jack, give me a pint o' the brandy.”
“Sister Mary Katherine,” exclaimed Jack, “I could never do that!”
“I've never sold alcohol to a nun in my life!”
“Oh Jack,” she responded, “it's for Mother Superior.”
Then her voice dropped…
“She's getting on in years and It helps her constipation, you know.”
So, Jack sold her the brandy.
Later that night Jack closed the store and walked home…
As he passed the nunnery, who should he see but Sister Mary Katherine.
And she was snookered.
She was singing and dancing, whirling around and flapping her arms like a bird, right there on the sidewalk.
A crowd was gathering, so Jack pushed through and exclaimed, “Sister Mary Katherine! For shame!”
“You told me this was for Mother Superior's constipation!”
Sister Katherine didn't miss a beat as she replied, “And so it is, me lad, so it is.”
“When she sees me… ”
“she's really going to sh.t!”