" And why did Garzhvog call you Uluthrek?”
“It is the title the Urgals gave me long, long ago, when I traveled among them.”
“What does it mean?”
“Mooneater.”
“Mooneater? What a strange name. How did you come by it?”
“I ate the moon, of course. How else?”
Eragon frowned and concentrated on petting the werecat for a minute. Then: “Why did Garzhvog give you that stone?”
“Because I told him a story. I thought that was obvious.”
“But what is it?”
“A piece of rock. Didn’t you notice?” She clucked with disapproval. “Really, you ought to pay better attention to what’s going on around you. Otherwise, someone’s liable to stick a knife in you when you’re not looking. And then whom would I exchange cryptic remarks with?” She tossed her hair. “Go on, ask me another question. I’m rather enjoying this game. "

― Christopher Paolini , Inheritance (The Inheritance Cycle, #4)