Back at the Clinic, the baby is back with more nose problems. House uses some Mob mentality and threatens to snap the baby's nose off if it doesn't stop crying and squirming. It works, and House pulls a tiny firetruck out of his nose. Older brother says his brother isn't very smart, and, of course, House says that genetics are powerful. He sets the firetruck down next to the fireman and the policeman, and then he has a thought. He grabs some crazy electromagnet thing out of the cabinet, saying he's always wanted to use it, and sticks it under the baby's nose. A large metal cat figurine pops out, and House compliments the baby on his well-developed sense of relationships, which we already knew when he did exactly what the dangerous mobster told him to, already making his sense of relationships better than Chase's. House explains that the baby stuck the police and fire people up his nose to save the cat. Great, but how did House know that whatever was up there was made of metal? Or that it wouldn't rip the baby's nose off on its way out? And how can you be smart enough to identify safety officers, but still stupid enough to stick a metal cat up your nose? It all gives House an idea, and he rushes off.
House writes questions to himself on the whiteboard. Why did Joey go into the coma, and why did he come out of it? Chase enters to report that Joey is not improving, and asks House whether he has an explanation for the estrogen thing. House says he does, but that he's not telling anyone. Chase takes that to mean that House thinks he's the one who told on him to Vogler. House says that Chase is at the top of the list, and, getting back to their dying patient, that the only coma you could come out of so quickly is a toxic one. Chase says that wouldn't explain the second coma, since all of Joey's food and environmental stuff has been strictly monitored. And also, he totally didn't tell on House to Vogler. Joey ate steak before his first coma, and fish sticks before the second. House can trust Chase, really. House says that Chase's assertions of honesty don't really mean anything, and leaves.
House sidles up to that Fed guard and asks him how, exactly, he got all that money he was being questioned about before. Bill comes up behind them and tells House to leave the guy alone, which tells House all he needs to know. Bill and House walk down the hall, and Bill admits that he paid the guy to bring his brother some pasta for dinner, although the guy ended up bringing back steak, since the Feds are all ardent believers in the Atkins diet, apparently. House says that Joey has ornithine transcarbamylase deficiency, meaning that his body can't break down large amounts of protein, especially when he's not used to them since he usually eats pasta. Thus, it was the steak that put him in the comas. This doesn't explain the estrogen level, but House says he knows of a chemical that raises one's estrogen levels dramatically when ingested: estrogen. Bill asks why, exactly, his brother would be taking girly hormones. House says there are some in a Chinese herbal aphrodisiac for gay men, which just happens to be sold on the same website that sells Joey's quit candy. Bill asks House if he wants to get bitch-slapped, too. House says Bill would have to slap him pretty hard to turn Joey straight. He tells Bill to be real here: mob guys like Joey don't get raped in prison unless, you know, they want to be. Bill insists that his brother is not gay. House says that Bill's over-defense of his brother's heterosexuality indicates that he has an idea that it isn't true, just like Chase's over-defense of his innocence indicated that he was actually guilty. House says it's up to Bill: if he doesn't think his brother is gay, then the hepatitis treatment should continue. If he does think Joey is gay, then the treatment has to stop and Joey will recover on his own. Joey will die if Bill makes the wrong choice. Joey, and every family member House and the Cottages have. They'll even dig up Cameron's poor, dead, husband and kill him again.