What do you have in your pocket? (or What does that person have in their pocket?)
From the writings of JRR Tolkien
Naomi – 1970s
Naomi Iliff (King) – owner
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?”
—JRR Tolkien (The Hobbit 1937)