The Italian – throws the cup and walks away in a fit of rage.
The Frenchman – takes out the fly, and drinks the coffee.
The Etruscan – eats the fly and throws away the coffee.
The Russian – drinks the coffee with the fly, since it was extra with no charge.
The Israeli – sells the coffee to the Frenchman, the fly to the Etruscan, buys himself a new cup of coffee and uses the extra money to invent a device that prevents flies from falling into coffee.
The Palestinian – blames the Israeli for the fly falling in his coffee, protests the act of aggression to the UN, takes a loan from the European Union to buy a new cup of coffee, uses the money to purchase explosives and then blows up the coffee house where the Italian, the Frenchman, the Etruscan, and the Russian are all trying to explain to the Israeli that he should give away his cup of coffee to the Palestinian.