This is a little pre-emptive since the course is not yet over, but here are some phrases that have passed through my ethics prof's lips during lecture that delighted me:
people are not just really bad parrots
Kant was really a huge science fiction geek
The Passion is an Arameic horror film
apparently Kant was a riot, and in certain respects kind of creepy
2700 boxes of books
I have three brothers: Joachim, So-and-so, and me!
nonesense on stilts
the tango-dancing epistemologist
[From Gary Watson:] Why should we care about living distinctively human lives rather than living like pigs or gangsters?
Here are some phrases from my Fiction and the Moral Life notebook as well:
Time eats its children (11 but not the 12th)
the Marquis de Sade should have been allowed to watch TV and that's all
a big book about nothing!