Jack was not against comparing the Doctor to a rat, but in his opinion the resemblance wasn't physical. No, not by a long shot. Donna liked him, though, whatever she might have occasionally said to the contrary - Jack remembered that much. Everyone always liked him, and if they ever realized the truth, it was usually too late for them to get out.

The paper in his hands was crumpled beyond repair now. "Rat," he repeated. "Absolutely. Tell me... how furious is he to be stuck in these clothes? Not a pinstripe or a tucked pleat to be found." It would be lovely if he could get his jaw to unclench.