What's a TA?
Teacher's Assistant, Professor's Assistant, whatever. Basically, some professors have so many students and so many classes they get students that have REALLY good grades and took the class a previous semester that could come in and teach them. Generally, the professor makes the schedule. If you've ever seen the movie Road Trip, his character would be a prime example of one.
That being said, I don't know how many people are in Phungy's class, so he may or may not have one.