Riddles In The Dark: Pocket Edition

(A customer has told me he saw another customer slip something in her pocket. I and a few others keep an eye on her to see if she tries again, but see nothing. I approach one manager at the office where she was speaking to the main book manager.)

Me: *to First Manager* “The customer told me he saw her slip something into her pocket.”

Book Manager: *Gollum voice* “What’s its got in its pocket…. What’s its got in it’s pocket? WHAT’S ITS GOT IN ITS POCKETS?!”