Board Thread:Character Discussion/@comment-35639545-20130617200946/@comment-118.208.6.48-20130623135151

The "Severe Nurse" is Nurse Ratched, from "One Flew Over The Cuckoo's Nest". See Adam and Eddy confirm it starting at about the 0:20 mark in this interview:

http://www.youtube.com/watch?v=H3coE2hSXTU