Firefly Glen you're burning up my mind

She seemed annoyed by his comment and then suggested a trade - a hint for the future. Charles was silent for about ten seconds as he contemplated this. What hint could he give that was vague enough? Fine, tell me my future, Charles eventually agreed. He didn't really think she had the capacity to, but if she gave him something good then maybe he'd give her a hint. It just needed to be sufficiently vague enough so that she would never guess in a million years what it actually was.