Examine the nurse

"Christina has been studying all week for her nursing finals and today is the day they go over restraints. Her exam proctor, Ms. Foxx just finished showing Christina how to safely apply cuffs without endangering the patient. Now that Christina is bound, the lesson deviates as Ms. Foxx begins removing Christina's heels. She tells her student that the first portion of her final exam will be a skills based review of the nervous system. She tells Christina to close her eyes and determine what is touching her foot. Eager to pass so she can get ready for the next day of her exam, the unsuspecting student doesn't think twice about this request even though it did not appear anywhere in her syllabus. The first thing she feels grazing across her foot kind of tickles. She quickly deduces that it was Ms. Foxx's fingernail. The next sensation to graze her wrinkly sole is much warmer and wetter. Could it be a tongue? Christina is starting to think her professor has a less than studious fix