Referring to the waiting room the doctor says to "follow the smell of cigarette smoke and flop sweat." Flop sweat is a term for what an actor / producer / playrwrite feels on the opening night of a play. It refers to the perspiration produced by the fear that the show will be a flop. This is not the first time this term has been misapplied in popular media. In Star Trek (2009) McCoy incorrectly refers to "flop sweat" as a symptom.