Jesus and Saint Paul are sitting in Heaven, talking about the pollution on Earth and wondering what can be done about mankind's filthy ways. Jesus says he's going to pop down to Ireland to see the situation for himself, and Paul agrees to join him.
When they get there, Jesus asks what the huge metal pipe is for.
Paul tells him it's used to take human waste out to sea where the muck kills dolphins, so Jesus decides to take action and strides across the waves.
Walking alongside, Paul is soon knee-deep in filthy water, while Jesus scoots along on top of the sea.
Ever hopeful of some help he slogs on, and Jesus keeps walking on water... but soon the water is up to Paul's chin.
"Master," he calls, "I will follow you anywhere, but I'm up to my neck in filthy water and I think I'm going to drown."
At this Jesus stops walking and looks at Paul. "Well," he says, "why don't you just walk on the pipe like me?"