As part of an Interfaith community project, A right wing Christian priest, a rabbi,
and a Pagan priestess decided that in order to improve relations in the
community, they will go on a fishing trip together on a local pond.
They're out in the boat, and the Pagan priestess excuses herself to go to the
bathroom back on the shore. She gets out, walks across the water back to shore,
and then walks back across the water to the boat.

The Christian priest looks in amazement, crosses himself, and they
continue fishing. It comes on about noon time, and the rabbi realizes they
left their lunches back on shore. So he gets up, walks across the water to
the shore, retrieves the lunches, and walks back across the water to the boat.

The Christian priest, now completely amazed, and a little bit
righteous, thinks, "not to be outdone by two heathens, I can do that
too!!" So he gets up, excuses himself to go to the bathroom, takes a
step out of the boat and promptly sinks to the bottom.

While he's flailing around in the water, the rabbi looks at the priestess
and says, "Do you think we should have told him about the rocks?"

The Pagan priestess replies, "What rocks?"