Jeff Winger: Hey! Troy sneezes like a girl!
Troy: How about I pound you like a boy...that didn't come out right.
Shirley: Isn't Abed's dad like a hardcore Muslim? They're not as forgiving as Christians. He'll cut your head off with a salami sword.
Annie Edison: Shirley! That is the most racist thing I've ever heard.
Jeff Winger: Pierce will top that in one minute.
Abed: My dad will only pay for classes that will help me run the family business. 9/11 was pretty much 9/11 for the falafel business.
Britta: Why are you dressed like an 80's rapist?
Answer: The implication is that Jeff will still be teaching at Greendale after Annie and Abed leave. As for who became vice dean? It's never shown, since it's not really important to the series.
TedStixon