In the locker room, Taub annoys Foreman with his bromantic overtures. Foreman tells him as much, too, but Taub wins the round by mournfully reporting that Rachel is dating her once only online romance. (If there was ever any doubt that Taub was raised by a Jewish mother, let it be forever banished!) Foreman caves under that mountain of guilt and tells Taub that they can get dinner together. Taub clicks his heels together in glee and runs home to cook for his new BFF.
Later they are enjoying a delightfully mannish evening at home, eating dinner in front of the television and playing first person shooter video games, when the cycle of violence comes full circle and the honeymoon period abruptly ends. Foreman is yelling at Taub and the vein in his forehead is bulging. Just when you think Taub should maybe go to a shelter or something, Foreman tips over in agony and announces that Taub poisoned him. Battered Roommate Syndrome! No jury in the world would convict you! Foreman runs for the bathroom as Taub points out that they ate the same food. Then Taub winces and runs and you start to really fervently hope that they live in a two-bed, two-bath apartment.
Speaking of bathrooms, the Patient Du Jour has locked himself in his and no amount of pleading and increasingly frantic knocking by his wife will convince him to open it. Chase and Amber come to her rescue, but the patient will not open the door. His wife reports that he hit her and the team starts knocking louder. Inside the bathroom, the patient is having hallucinations. Which is still not an excuse for domestic violence.
Obviously the patient's psychotic break means it is back to the drawing board for our crack team of medical detectives. Foreman thinks that they caused this new symptom, but he can't get his full opinion out because of the continuing case of the trots. He barrels out of the room with Taub hot on his heels. With half his team in the closest can, House has no choice (except, of course, EVERY OTHER CHOICE IN THE WORLD) but to bring the rest of the team into the commode so they can continue their differential diagnosis. Taub and Foreman are not amused and neither are their stunt butt doubles. Chase and Dr. Amber (who is probably fantasizing about preparing a hostile work environment lawsuit right about now) cover their noses while House forces Taub and Foreman to think and poop simultaneously, which I'm pretty sure is unconstitutional. After a few minutes of uncomfortable (for some more than others) conversation, House orders that the patient and his wife be put on anti-fungal medicine. Also, Foreman hates Taub.