Gordon Brown calls David Cameron because he is so proud of having finished a complete jigsaw puzzle since being retired.
"Hey, David", says Gordon Brown, "I am so proud because the box this puzzle came in says 5 to 8 years on the side and I finished it in just under a month."
David Cameron sighs and says, "You are indeed a genius, Gordon."
Gordon Brown says, "Hey, David, I'm having trouble with my new puzzle, though, can you help me?"
David Cameron says, "Sure, Gordon, what's your problem."
Gordon Brown says, "Well, none of the pieces fit together in any way. I didn't have this problem with the other puzzle."
David Cameron says, "Well, look on the cover of the puzzle box and tell me what kind of picture you see - that should give you a hint."
Gordon Brown says, "All I see is a picture of a really big red and green rooster."
David Cameron thinks for a minute and says "George, put all the cornflakes back in the box ..."