A private practice doctor named Dr. Peter Fisher comes to Sacred Heart. "Petey" seems to be the anti-Dr. Cox by bringing coffee for J.D. and getting along with all the nurses. Dr. Cox hates the guy, however, and J.D. can't help but ask for advice from Petey on how to handle his mentor.
Carla in the meantime is worried that she's no longer looking young. Not helping is a narcoleptic patient doesn't collapse on seeing her, the way he does on seeing Elliott, since any sex-driven thoughts knock him out. She eventually realizes her new engagement ring makes her invisible to guys, including Todd.
Turk and Dr. Kelso engage in a petty leisure fight when they interrupt each other's games.
Tropes for this episode include:
- Bait-and-Switch: At first it seems like Cox hates Petey because he's a former protégé who left for private practice doctor (thus in it for the money), only to learn he slept with Jordan years earlier.
- Big Brother Instinct: Mentioned by the narcoleptic patient; he says he wasn't feeling attracted to Carla because she looks like his sister. Older or younger sister we don't know, but the mere thought squicks him.
- Blatant Lies: After he finds the Ms. Pac-Man machine with its cable gone, he walks up to Turk playing with it and yells at him.Turk: Oh, you mean this? This is mine from home.
- The Bro Code: Cox hates Petey because he's a former student of his and Petey slept with Jordan before they got divorced.
- Cerebus Call-Back: J.D. felt extremely guilty about sleeping with Jordan back in season one, and told Dr. Cox that he didn't know who she was. It turns out Dr. Cox has gone through this before, and with one of his closest friends no less.
- Closet Gay: Kelso tells Turk that his son has brought "his 'roommate'" home for Christmas every year for the last five years.
- It's All About Me: J.D. immediately assumes that Dr. Cox and Petey's fight is because he's getting closer to Petey, even assuming Dr. Cox using female pronouns is a reference to his calling J.D. girl's names until he hears the below Wham Line.
- Like Brother and Sister: Carla finally talks to the patient, who says that he's not sexually attracted to her because she looks like his sister. When she reminds him she's his nurse and not his sister, he collapses immediately, showing he was attracted.
- Love Forgives All but Lust: Dr. Cox divorced Jordan because she slept with one of his proteges behind his back. Worse, said protege is now a private practice doctor and thinks that he and "Perry" should be cool now.
- Never My Fault: Petey doesn't seem to get why Dr. Cox can't stand the sight of him. He assumes that since Dr. Cox and Jordan are together again that they're cool. Dr. Cox has to spell it out that Petey used his trust to betray him .
- Unreliable Expositor: The way that Dr. Cox put it, Petey manipulated Jordan into bed by using hers and Perry's marital problems against them. J.D. can attest that it's usually the opposite: Jordan manipulated him into sleeping with her by using sex to stop him from ordering her to stay in the hospital to take care of his body. What's more, Jordan then revealed this to hurt Perry and J.D.'s relationship, showing no regard for how it would affect them. Jordan herself admits that she has Commitment Issues and broke off a casual sex relationship with Perry when he admitted that he was falling for her again. Of course, Petey sleeping with Jordan was still a great betrayal, with or without seduction from either side.
- Wham Line: J.D. in-universe has this reaction when Dr. Cox gives Petey a What the Hell, Hero? for betraying his trust because Petey knew that Dr. Cox and "she" were having problems and used those problems to bed "her". It dawns on J.D. that they're not talking about him, but about Jordan.
