The Doctor watched the custom with a slightly raised eyebrow. Old habits died hard, he remembered. Even now, thousands of years since his last time on Boeshane, and Jack knew how to do every custom without a second thought. Maybe it was just a sign of how much his home mattered to him, or maybe it was a sign of how much he missed it.

Now, was the Doctor supposed to do the same? Or should he just hold up his psychic paper and try to be cheery? His accent wasn't as perfect as Jack's, so being the foreigner on business with the native would be best (it was, after all, the closest to the truth).

"John Smith," he said. "Dangerous Waters Research Bureau."