A film crew is on location in Kenya, when a tribal shaman approaches the director and says, "Tomorrow rain." The director pays no attention, but the following day it pours and shooting has to be delayed.
That night, the director sends his assistant to bring the shaman back. "What will be the weather tomorrow?" asks the director.
"Bigger rain tomorrow, much wind," and sure enough a terrible storm once again delays the filming.
But then the witch doctor disappears for a week and the director, now depending on him, sends his people out to find him and bring him back to camp.
Finally, he is located and brought to the director's tent. "What will be the weather tomorrow?" asks the director in desperation.
"No idea," says the shaman, "Radio batteries dead."