Just to be sure. She was testing him. Well, of course she was. Donna Noble. "The version you know? Thin. Twitchy. Disheveled."

He paused. That actually went for more than one of them. "Big teeth, tight suits, and a bit of a jackass." Though that last trait seemed to also run through quite a few incarnations. "He always put me in mind of a lizard." Jack finished folding another little frog and dropped it onto the table.

That wasn't entirely true. There had been a time when Jack would have followed that hyperactive man to the end of the universe - had done so, in fact, though it wasn't intentional. Once upon a time Jack would have done anything for him.

Times changed.