When Harry Met Sally Easter Egg - Family Tradition

In the CLASSIC restaurant scene when Meg Ryan tries to convince Billy Crystal how easy it is to fake satisfaction....
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The whole restaurant watches as Meg shouts "Oh yes! Yes!", etcetera.
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When she is finished and acts nonchalant. The woman who says, "I'll have what she's having!" is the director, Rob Reiner's mother. The Reiners put each other into their films.