"I was irritated but not surprised. However, sweet karma appeared in the form of Ms. Important's office ID hidden under some crumpled napkins. I told the busboy to keep quiet and not say anything if she came back, and instead to send her my way.
"10 minutes later, in came Ms. Important. She made a beeline for the table she had been sitting at, only to see it occupied with another four-top. She accosted the busboy cleaning a nearby table, and he pointed to me. I was walking over to pour refills of coffee nearby, and she stood in my way, demanding to know what had happened to her office building ID. If she'd been nice about it, even after stiffing me, I would've given it back to her.
"She was not nice about it.
"I said to her in the most conciliatory voice I could muster, 'I'm sorry, when I went to bus the table nothing was there,' and smiled the fakest possible smile. Her face dropped and she told me she'd have to pay $200 to get a replacement ID made, as it was her security pass. Again, I reiterated nothing was on the table. Her face fell completely, and she skulked out of there, as she was very late to work.