"This place we're flying over now isn't in the atlas, is it?" the pilot said, grinning.
"You're darn right it isn't in the atlas!" cried the Head of the Air Force. "We've flown clear off the last page!"

The young pilot was still grinning broadly. He said to them, "That's why they always put two blank pages at the back of the atlas. They're for new countries. You're meant to fill them in yourself."

- Roald Dahl, The BFG