I have a friend named happyspector. Once, when I wrote a particular line in this here LJ, he asked my permission to use that line in his writing. (As he put it, with edits so as not to reveal what he was talking about, "Can I steal that line for one of the [redacted] stories? I can very easily see [redacted] saying that to [redacted] (in Old Lords know what context), or vice-versa.") I said yes.
He did. I found that out last night, starting to read the most recent manuscript he e-mailed to me.
It's like an Easter Egg in a novel!