An Indian chief is driving his Cadillac somewhere at Nevada. Suddenly his car breaks down. He examines it, and reveals that a technician must be called. But the chief has only $4, and no credit card. So he gathers some wood, makes a fire and signals his tribe with its smoke:
"Hey, send somebody to my location with $700!" The tribe accepts this signal, but to make sure of its meaning, signals back - once again, with the smoke:
"OK, chief, but why so much ?"
At that moment a ground test of a nuclear bomb is being held on the test field nearby. A huge mushroom-like cloud of smoke rises into the sky... The tribe signals:
"OK! OK! We will send money now. No use using that kind of language with children out here."