Jesus and Moses, both old men by now, are out fishing on the Red Sea one day..
They've had a few, and are reminiscing about the great old times they had when they were young.
Jesus says, "Hey Moses - ever do any of the cool shit you used to do when you were young?".
Moses replies, "Yeah... still part the sea occasionally. You?"
"Nah", says Jesus, "Been ages. Forgotten how".
"Rubbish", says Moses. "Come on, let's see if you can still walk on water".
Jesus is just tanked enough to give it a go. Gets up on the side if the boat, takes a deep breath, steps onto the water.
Sinks like a stone...
"Ah shit...", says Moses. Parts the sea, reaches in, grabs Jesus by the scruff of the neck, and hauls him back aboard.
They look at each other for a few seconds.
"So, what happened there?" asks Moses.
Jesus looks down and says "I keep forgetting those bloody nail-holes in me feet..."