Mason was known as a “Borscht Belt” comic.

ComedianJackie Masonhas died at 93.

Lawyer Raoul Felder, a friend of the Rabbi-turned-funnyman, confirmed the news toThe New York Times.

Jackie Mason has lunch on 6th Avenue in Manhattan on March 22, 2012 in New York City.

Jackie Mason.Bobby Bank/WireImage

Mason died at an undisclosed hospital on Saturday.

His humor also focused on Jewish themes, and sometimes veered into political incorrectness.

Mason voiced Rabbi Hyman Krustofsky, Krusty the Clown’s dad inThe Simpsons.

“None of it is an act.

It’s all exactly me,” he said.

It’s all exactly what I feel.

I have no pretensions about anything when I talk about myself."

A host of celebrities mourned Mason’s passing on Twitter.