Matt and PC manage to find their class by running into its teacher. As they get settled, he explains that they're looking at a patient with asthma and "increasing SOB." "SOB?" says PC, all scandalized and thinking that the doctor totally just called his patient a son of a bitch. What an idiot. Even I know that that means "shortness of breath," and I only see that term when I'm snooping around the ER patient complaints, hoping to catch something funny like "swollen penis." Dr. Teacher tells Matt to listen to the patient's lungs, to which Matt is sad to report that he doesn't have a stethoscope. Because he left it on the subway. With his black bag. Which the rest of the group makes fun of him for having. Well, sort of. One guy just says, "Wow…a black bag," with a sarcastic smirk on his face. He looks kind of stoned, too. Dr. Teacher points out that all the other medical students managed to bring their stethoscopes, then pulls Nurse Debi "How Did This Happen to Me" Mazar aside (addressing her as "Nurse Kelly," like, are nurses commonly referred to by their job title and then their first name?), and orders her to give Matt her pretty pink stethoscope, which has a little stuffed animal on it. I tend to think that a nurse is going to need her stethoscope a lot more than a second-year med student, but whatever. Dr. Teacher scolds PC and Matt for being late and unprepared, but Matt's too busy listening to the patient's chest to pay him any mind. So he yanks the stethoscope out of Matt's ear and yells into it. Dr. Teacher is now Dr. Assbeard. Because he's an ass, and he has a beard, and that beard is in and of itself pretty assy, so…Dr. Assbeard. Matt spits out some medical jargon about what he heard in the patient's lungs, to which Dr. Assbeard makes a sarcastic reply. Then Matt's cell phone rings. The patient, obviously someone who, like me, hates hearing other people's cell phones ring, begs Matt to answer his phone.