I think his point was that if he said anything bad about her, she would club him over the head, like she did with the Halibut.
If he is going to get all icky about banging a fish on the head with a large stick, than no thanks! You have to do a hell of a lot worse than that if you are going to be Commander of the Armed Forces. It makes me shudder when I have to admit that Obama is the current Commander of the Armed Forces! God help us!
I think he was implying that he didn’t want to get the same treatment.