Dorinda Medley Rips Sonja Morgan on 'RHONY': 'I'm Not Going Backwards, Ass Wipe' (Video)

In the clip above, Dorinda is joined by "RHONY" cast mates Bethenny Frankel, Luann D'Agostino, Carole Radziwill, Sonja Morgan and Tinsley Mortimer in a non-Upper East Side establishment, courtesy of Bethenny, who said she wanted to push the women outside their comfort zone.

The ladies were discussing a ski trip to Vermont when Sonja brought up Dorinda's alleged interest in getting involved with her Tipsy Girl alcohol brand venture, claiming she had texts from Dorinda's boyfriend John Mahdessian to prove it.

"It's bullshit, so stop with the bullshit," Dorinda fired back. "I'd rather chew my left leg off than be part of Tipsy Girl. You think I need that shit? Show me the text!"

Luann tried to diffuse the situation and keep more heads from turning, but there was no taming Dorinda.

"I don't care what John says! I'm not married to John Mahdessian. John Mahdessian doesn't run my estate. Let John Mahdessian run Tipsy Girl. I don't care if John wants to be Tipsy Guy. Have at it! I don't pay his bills. I don't live with him. Here's the good news: I am free!"

The spat continued as more and more people who were trying to enjoy their lunches stopped to watch. Sonja then brought up the ladies' trip to The Berkshires, to which Dorinda responded, "I'm not about going backwards, ass wipe."

To quote Carole, "When Dorinda's bad, she is so good."

When TooFab asked Dorinda about the outburst, she said that Sonja's mention of Tipsy Girl and The Berkshires was "just a continuous series of delusional lies meant to draw attention back to her."

"To bring up The Berkshires after she just got invited back and was wearing my pajamas from my late husband without permission and passing out drunk at my dining room table at 3 a.m. Come on, enough," Dorinda added. "The real question should be if she'll ever be invited back at all."

"The Real Housewives of New York" airs Wednesday nights on Bravo.