Adams tells Callie about the bait-bottle of Vicodin and how the mother didn't bite. The mother is sleeping outside Callie's room because Callie won't let her in there on account of not being believed about her drinking.
Wilson joins House in the elevator and smugs at him about him protecting Callie. House admits that he hopes he was wrong about the aneurysm, but when Wilson calls him on it, backs off and decides that he hopes that the aneurysm bursts non-fatally.
Taub interrogates Wilson about empathy. He wants to know how Wilson fakes interest in his patients. Wilson says that if they seem boring, he just hasn't found what makes them interesting yet. He claims that he talks about things that interests him until he finds something the other person is also interested in.
Foreman and Anita. Foreman wants her to tell her husband they broke up so they can go back to sneaking around. He doesn't know why, though. "This just feels wrong." She decides to leave.
Clinic. Confederate soldiers are vomiting into the trash can. House looks at the jacket of one and asks which one is the cheap bastard. The uniforms are polyester, not wool. This caused got antimony poisoning, causing the diarrhea and numb hands and vomiting. Sheldon claims that he was being authentic in that he only spent $21 on the uniform.
The mom brings Callie a banana muffin, which reminded her of a trip they once took to St. Petersburg, Florida. Callie wants to know if she was high on that trip. "Not when we were together. I used to wait until you went to bed." Callie doesn't seem delighted by that news, but tells her mother she can stay if she wants. Adams is happy. Callie eats the muffin. BEEP BEEP BEEP! She goes unconscious. Adams says she was wrong and that the berry aneurysm must have just burst.
Surgery. The various lobes and ventricles are clear. House says the aneurysm must have leaked instead of bursting. No, everything is clear. She doesn't have a berry aneurysm. BEEP BEEP BEEP! Blood pressure dropping! House calls Adams out.
Adams says that Callie got a little better on steroids. They went to Florida once. Cholera? Dengue fever? House mocks that, gets as far as "lays in wait for several years," then goes to talk to the mom. Did they go swimming in a lake or everglade? Yes! In a canal! House intones, "Family vacations kill." House has the mom go with him on the grounds that he doesn't want to explain it twice. Not sure I buy that. He loves explaining things.