A man is caught in a traffic jam in Zimbabwe. Suddenly, someone taps on the
window of his car. He rolls it down and the person says “President Mugabe has
been kidnapped. His ransom is $50 million. If the ransom isn’t paid, his
kidnappers have threatened to douse him with gasoline and set him on fire. We’re
taking up a collection. Do you want to participate?”

The man in the car asks “On average, what are other people donating?”.
The man on the street replies “About five or ten liters.”