The sinking of the Titanic.

Fifteen minutes after the Titanic sank, Mick and Patrick find themselves on the same overturned lifeboat. The water is freezing, sharks are cruising by, and the boat is slowly sinking.

"Oh, well" said Mick, "It could have been worse".

"Worse? How could it be worse?", screamed Patrick.

"Well, we could have bought return tickets!"