Oh, I have my retorts. When people say, "my you speak so well!" I reply with a very serious and sincere, "You also speak very well. Keep up the good work".
And my personal favorite: When people say to me, "You dont <i>look</i> deaf." I reply with, "Well, you don't look stupid".
Luckily my professors are all very intelligent and most even try to learn a bit about hearing loss and deafness and related things like ASL. I'm very lucky to have gotten a good academic scholarship to a very good small college where the professors 1. know the names of the students and 2. care about students. It always shocks my state school friends when I tell them that my professors usually invite the whole class (which is only 10-20 people) to their house for dinner during finals. They are even more shocked to learn that professors and students even go to the local pub for a pint and conversation. Oh, i don't want to graduate...