House decided to ignore the knock on the door, seeing as it was probably going to be either Dr. Cuddy or Dr. Kelso, neither of whom he particularly wanted to see. Maybe if he ignored the knock they would go away, thinking him to be elsewhere. Swivelling the chair slightly, House leant across the desk to pick up the bottle of Vicodin, tipping it so that a couple of tablets fell into his palm, which he then raised to his mouth, swallowing them, and watching the door with disinterest.