"Ask us! ask us!" said Gollum.

Bilbo pinched himself and slapped himself; he gripped on his little sword; he even felt in his pocket with his other hand. There he found the ring he had picked up in the passage and forgotten about. "What have I got in my pocket?" he said aloud. He was talking to himself, but Gollum thought it was a riddle, and he was frightfully upset. "Not fair! not fair!" he hissed. "It isn't fair, my precious, is it, to ask us what it's got in its nassty little pocketses?"