antidentite

Etymology
Alteration of antidentist, from, to rhyme with. Coined in an episode of the American sitcom Seinfeld, in which Jerry Seinfeld is annoyed with his dentist, Tim Whatley, who has apparently converted to Judaism only because he wants to be able to tell Jewish jokes. Kramer calls Jerry an “antidentite” in response to Jerry taking offense to Whatley's Jewish jokes.

Noun

 * 1)  someone who has a negative or prejudiced opinion about dentists