The former friends were at each other's throats -- and one even lashed out at producers behind the scenes -- from the moment Andy Cohen said, "Welcome to part 1 of the reunion." And it all started with Kelly calling Vicki a hypocrite.
Tamra Judge, Shannon Beador and Vicki were talking about their drunken trip to Mexico when Gina Kirschenheiter interrupted Vicki mid-sentence. Vicki refused to attend Gina's birthday party because she said her "partying" days were behind her, but as Gina pointed out, Vicki had no problem "whooping it up" in Mexico with her "Tres Amigas."
"Everything Vicki says is hypocritical, so don't get offended," Kelly told Gina. "This is Vicki's MO. She's hypocritical."
"Does he have your back?" Vicki asked. "He said it was 14 years of hell being married to you."
"Why didn't he fire for divorce then, if it was 14 years of hell?" Kelly fired back, starting to get emotional.
After some back and forth, Kelly blurted out that Vicki was "like a fart. She's silent but deadly!"
Vicki called Kelly a "baboon" before more back and forth ensued. Then she blurted out, "I don't do cocaine. Sorry."
Kelly was shocked. She insisted she doesn't do cocaine and slammed Vicki for spreading that rumor knowing she has a child.
"You're never with Jolie," Vicki countered. Kelly lost it, saying she's "with Jolie one week on, one week off." Shannon vouched for her, as did Gina. But Vicki kept going, claiming Michael told her he had Jolie "much more" than Kelly did.
When the cast got up to take a break, Tamra scolded Vicki for accusing Kelly of doing cocaine. Vicki said she and Shannon "heard" that rumor but that she didn't have any evidence.
Elsewhere, Kelly lashed out at the Bravo producers who followed her into her dressing room with cameras.
"Can you guys just give me a minute?! Please?!" she yelled. "God, I need a f--king minute. Seriously!"
In a panic, Kelly called Michael and asked him if anything Vicki claimed he told her was true. Michael maintained Kelly was a good mother, said he had never seen her do drugs and urged her to "control [her] temper."
The whole spectacle reminded us of our own interview with Kelly earlier this fall, when she described Vicki as "hypocritical in every sense of her being." Enjoy that video below.
Part 2 of "The Real Housewives of Orange County" reunion airs Sunday, December 2 at 9 p.m. on Bravo and we can't wait.