Tread Perilously's Total Request Live 4 finally brings Erik and Justin to an episode of House -- and it's an episode titled "You Don't Want To Know." No, really!

When Doctors Kutner and Cole go to a magic show, they witness the magician fail at one of his tricks and bleed from the mouth. Kutner admits him to the hospital and tries to get House to take the case. But House, clearly inspired by an episode of Survivor, issues his candidates a new challenge: obtain Dr. Cuddy's thong. The winner will be safe from elimination and will be allowed to nominate two of the other doctors for the upcoming cut. Will it stop everyone from noticing this week's medical mystery?

Justin attempts to determine the premise of House and tries to figure out why HR never reprimands the title character. He and Erik nominate Dr. House as the Third Doctor What. They also have a hard time remembering names for once. Justin is surprised to see Olivia Wilde on the show. Erik names Jon Favreau as the next Richard Donner. The Talented Mr. Ripley gets heaped with praise. Justin reveals his love of close-up magic and his aversion to scenes of surgery. A digression about The Rolling Stones breaks out and, occasionally, the pair talks about House.