UK is narrator for the joke
USSR is the waiter
Canada is the Texan
Russia is the Russian (obviously)
America is the New Yorker
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UK: A Texan, a Russian and a New Yorker go to a restaurant in London.
The waiter tells them,
USSR: "Excuse me -- if you were going to order the steak, I'm afraid there's a shortage due to the mad cow disease."
UK: The Texan says,
Canada: "What's a shortage?"
UK: The Russian says,
Russia: "What's a steak?"
UK: The New Yorker says,
America: "What's 'excuse me?"
