This drunk gets on a bus and asks the driver how long the trip is between Limerick and Cork.
"About two hours," says the conductor.
"OK," says the drunk "then how long is the trip between Cork and Limerick?"
The irate driver says to the drunk "It's still about two hours. Why would you think there'd be a difference?"
"Well," says the drunk, "It's only a week between Christmas and New Year, but it's a long time between New Year and Christmas!"