Jerry's dentist, Tim Whatley, has just converted to Judaism and is already making Jewish-themed jokes.
Jerry, who is Jewish, tells Father Curtis (in a confessional booth) that he thinks Tim only converted for the jokes, and that Tim has also been telling Catholic-themed jokes, saying that he's offended (not as a Jew, but as a comedian).
Father Curtis is also a Tim Whatley's patient.
* Law & Order: Special Victims Unit