Vicki Gunvalson took to her Bravo blog to sound off after Tamra Barney called a "b*tch" on Monday’s Real Housewives of Orange County.

As Breaking Celebrity News previously reported, the show's original cast member was at the brunt end of the name-calling when she prematurely left a Malibu wine-scouting trip for their joint business endeavor, Wines by Wives, to attend a dinner in Los Angeles.

On her blog Tuesday, Vicki -- "The O.G. From the O.C.," as Andy Cohen affectionately calls her -- explained that she "was exhausted" after returning from an Atlanta insuranc