How to identify students when the professor walks into the class and says good morning.

* If the students say good morning back, they are Freshmen.
* If the students put their newspapers down and open their books, they are Sophomores.
* If they look up so they can see the professor over the tops of the newspapers, they are Juniors.
* If they put their feet up on the desks and keep reading, they are Seniors.
* If they write it down, they are Graduate students.