OK, it's an old 1 but still a good 'un.
Jesus turns up on Brighton Beach, but nobody recognizes him.
"I'm Jesus Christ, Son of God, come to save you," he keeps saying.
Nobody takes any notice until a bunch of jack the lads ask him to prove it.
"Let's see you do that walk on the water then."
So JC steps up to the briny, and it whooshes up to his ankles, then his knees, his waist and his neck.
"So what's all this cobblers abt you being Jesus when you can't walk on water," jibes one of the lads.
To which JC replies:
"Well I didn't have these bloody holes in my feet last time I tried."
For we won't be the young ones very long.