It's storm Ophelia and two catholic nuns, a novice and a sister are travelling from Dublin to Belfast to check up on an old friend.
Just as they get to Belfast their car starts to run out of petrol so the sister pulls over and walks back to a garage to get some fuel.
Unfortunately the garage had run out of jerry cans so the sister walks back to the car and comments on her disappointment to the novice.
"Worry not sister!" exclaims the novice, for we have brought the bed pans, just in case the accommodations are not en-suite.
The sister thinks that's a great idea and takes the bed pans to the petrol station and fills them up.
Being buffeted by strong winds the sister carefully takes them back to the car and pours the contents in to the car.
Two protestant ladies observing the nun walking back with the bed pans are dumbfounded by what they see. The wiser of the two turns to her friend and says "well if it starts, I'm converting!"