How sharper than a serpent's tooth...

...it is to read about yourself on Ratemyprofessor. 

Seriously: why is it only the students who find you ear-drum-splittingly irritating on the scale of Fran Drescher who post reviews online?  Why is it never the students who come to you at the end of a semester and fervently tell you the class was the highlight of their year and you changed the whole way they looked at theatre/literature/their own writing/the world at large?  Hmmm?