Alex's MRI isn't working out, due to her new symptom of uncontrollable twitching. Cameron says that they'll skip to the LP.
In a nearby bathroom, House puts a hand on Dad's neck to pretend he's checking the guy's glands, thereby making him House's patient and keeping him protected under doctor-patient confidentiality rules. I don't think that's legally sound, but I also don't want PPTH's legal eagle Stacy to come back and clarify it for me either, so I'll take it. Now that Dad can speak freely without worrying about getting busted, House wants to know if the guy ever screwed his daughter. Needless to say, Dad does not appreciate the accusation. House says that Alex has a "heart-shaped ass" and "perky, all-natural breasts" that would make it very difficult to resist her, at which point the Dad yells at House to stop speaking about his daughter that way. The trap has been sprung, as House eagerly points out that he was just quoting Dad in a recent issue of Celeb Weekly. Oh! Burn on you, Dad! And, indirectly, on you, dad of Jessica Simpson! Dad argues that, as Alex's manager, he has to promote her that way. House congratulates him on being able to compartmentalize, saying that he must have been in "manager" and not "father" mode when he had sex with Alex. House asks Dad if he loves his daughter enough to admit that he had sex with her. Because her resulting psychological problems are manifesting themselves into a real physical condition that could kill her. Her doctors can't help Alex if they don't what's going on. And the fact that Dad hasn't walked out of the bathroom already is enough to tell you that he did, in fact, sleep with his own daughter. Just for good measure, though, he admits it: "One time." Oh, well, then, that makes it much better. NO, IT DOESN'T! Pervert! Pervert! Gross, icky pervy pervert!