As they say in the movie biz, Tammy Brody and Diane Falanga “met cute.”

“High taxes and terrible schools,” Tammy would respond.

Gradually it occurred to Reid that the pair’s conversations were a script waiting to be written. “Tammy is just over-the-top, all the time, over-the-top,” he says. “There’s no middle ground for her, her mood is way up or way down. And Diane has this chameleon quality, she would sort of adapt herself to Tammy’s mood, and it’s funny to watch them go off on each other. So much they said made me want to shit laughing.”

TAMMY: The one with the Barnes & Noble, and the Taste of Home Depot.

DIANE: Which Land Rover?

Tammy, who a few scenes earlier has described Diane as her best friend, answers, “Because you are an asshole.”

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Tammy says she loved the conceit from the start even though she comes off as an uberbitch. “I was all for it because Reid and I basically have the same attitude–we think all that superficial stuff people say is hilarious. So he just sat down to write the meat of the script and when he had it, we’d sit out on the balcony at night and throw ideas back and forth. He and I never laughed so hard in all our lives.”