J.D.'s older brother, Dan Dorian, has come to town for a short visit. Within the first few minutes of his visit, he manages to anger Dr. Cox and to pretend being a doctor by giving a patient a diagnosis. Dan starts to hint that he's attracted to Elliot, which doesn't sit well with J.D., who lets him know that he and Elliot previously slept together, so she is off limits. Elliot later joins J.D. and Dan for lunch. Dan tries to pump Elliot for information about how J.D. is in bed. She insinuates that it was good, but not great. J.D. is shocked.