Student: Der Cade.
Me: What did you just call me?
Student: Der Cade.
Me: Der Cade?  No.
Student: Der.  Like D-R.  For doctor.
Me: No.
Student: Can I call you Der Cade?
Me: No.
Student: Can I call you D-R Cade?
Me: No.
Student: Can I call you D. Cade?
Me: No.
Student: Can I call you Doc Cade?
Me: No.
Student: Can I call you Dr. Cade?
Me: Yes.
Student: Aw.  That’s no fun.
Me: But at least I’ll answer.