In-A-Gadda-Da-Vida, honey, Nate is lying in bed and smiling, having a grand old time inside his own head. When Chase foolishly attempts to have a conversation with him, Nate calls him "Skippy the Bush Kangaroo" before admitting that he is not in pain right now. Cameron says that must mean that the treatment worked, which means that Nate had cluster headaches after all. Super-awesome cluster headaches that only respond to drugs, but cluster headaches all the same. Nate interrupts Cameron to tell her that even with all the colors and light trails he's seeing, he can tell she's hot. "She's making me horny!" Nate announces while Cameron kind of looks flattered. Chase tells Nate to deal with it, but Nate says it's not fair of them to get him stoned and then "not close the deal," sounding a lot like a future rapist. Chase gets pretty ticked off, but Cameron tells him to be more understanding, since the kid's mind is a bit drug-addled at the moment. Nate interrupts to say that Cameron will regret saying no, and proceeds to open his gown to show her why, because women always go for that line. Chase rushes over to cover the kid up and protect Cameron's innocent eyes, which are at least a little curious, since she pretends to avert them while sneaking enough of a peek at Nate's deal to want to see more. Chase thinks she's pulling another "flirt with the underage kid to make Chase jealous" move, but she actually noticed that Nate has "undersized testes," and she apparently had to move things around to get a better look, judging by Nate's sigh of pleasure that I really didn't need to see. They should have made Chase do the touching. Why give Nate what he wants?

Cameron gives HIPAA the middle finger as she loudly announces Nate's tiny balls to House and the rest of the PPTH lobby. House, meanwhile, is looking around the nurses' station for a dime he dropped on the floor, which a woman who appears to be Nurse NotBrenda is happy to provide to get him away from her. Chase, House, and Cameron continue down the hall, with Chase saying that House's theory that a vascular problem was causing Nate's cluster headaches no longer matches Nate's symptoms. House asks what causes rage, headaches, personality changes, and hypergonadism. Well, maybe Nate just has tiny balls and is really insecure about it, leading to the rage and the personality change. I can't explain the headaches, though. Meanwhile, Cameron wants to know where Foreman is. House just says Foreman's mad at him, but he won't say why. Cameron supplies some token medical information that getting beaten up at school could have given Nate a blow to the head that caused some lesions on whatever part of his brain has an effect on the size of his testes before asking House what they're going to do when Foreman leaves. House reminds her that he is in control and doesn't feel like telling her anything other than that he's dismissing her lesion theory, since it would give Nate a fever he doesn't have. Meanwhile, Chase doesn't think they need to hire a third fellow, saying, "The two of us can handle it." You mean, you can handle it, Chase. This season, you've been the only Cottage to solve any medical mysteries, and more than once, you solved one that House couldn't. Meanwhile, Foreman and Cameron killed a young woman and an old man, respectively. House tells them to biopsy Nate's pituitary gland, but to make sure everyone knows that he was right about the cluster headaches.