He might have actually had something to say to that syphilis comment, if he hadn't been so distracted by the use of the word cargo. The Captain opened his mouth to retort -- but Eight beat him to it and Jack stood there gaping for a few seconds while the Doctor lectured on indignantly.

There was just one angle the Doc forgot to rant about and Jack picked it up easily, not missing a beat between the end of the Doctor's justified tirade, "And what the fuck sort of business are you doing that requires moving sentience like that?"