David Baddiel has told ITV News that David Cameron has not understood the wider context of the word "Yid".
Mr Cameron told the Jewish Chronicle that Spurs fans who use the term should not be prosecuted. But many find the term anti-Semitic and offensive.
The comedian told UK Editor Lucy Manning that the Prime Minister would not let another racist term "pass his lips":
Watch Lucy Manning's report on ITV News at 6.30pm
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Classmates and well-wishers have been leaving flowers and messages at a tree on a housing estate in Mansfield.
MPs will pay tribute in the House of Commons to former Lib Dem leader Charles Kennedy, who was found dead at his home earlier this week.
David Cameron has faced the House of Commons for his first Prime Minister's Questions of the new Conservative government.