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Lisa Vanderpump is scoffing at Brandi Glanville's claim she was not fired from "Real Housewives of Beverly Hills," calling her explanation a "crock of poo."

Lisa and Kyle Richards were leaving Villa Blanca in Bev Hills Wednesday when our photog asked about Brandi's claim she left on her own terms.

There are reports Brandi was 86'd because she didn't get along with all the girls, especially Lisa. But Vanderpump only wishes she had the juice to kick that kind of ass.