Anansi Boys?

"You aren't scared of limes, are you?" asked Charlie, before remembering that he'd given the lime to Daisy.

The creature laughed, scornfully. "I," it said, "am frightened of nothing."

"Nothing?"

"Nothing." it said.

Charlie said, "Are you extremely frightened of nothing?"

"Absolutely terrified of it," admitted the Dragon.

"You know," said Charlie, "I have nothing in my pockets. Would you like to see it?"

"No," said the Dragon, uncomfortably, "I most definitely would not."

There was a flapping of wings like sails, and Charlie was alone on the beach. "That," he said, "was much too easy."

Taken from the book 'Anansi Boys' by Neil Gaiman