J.D.: What's all the extra security around here?
Patrick: Every year, the same group of rowdy doctors, arrive and all they do is drink, hit on women and trash the place. Oh, God. Here they are now.
[Dr. Kelso leads a group of similarly-aged chiefs of medicine]
Dr. Kelso: What up, Phoenix! Oh, that's what I like about the south. Hey there, Patrick! Good to see you again, man. [throws Patrick's paperwork] Fetch!