WATCH: Kris Jenner and Khloé Kardashian Fight Over Who Is Rob Kardashian’s ‘Biggest Enabler’

Does mom really know best?

In a new preview for an upcoming episode of Keeping Up with the Kardashians, Kris Jenner and Khloé Kardashian go toe-to-toe on which of them are Rob Kardashian’s “biggest enabler.” Though Khloé admits to helping her brother out by letting him live with her, she blames her mother for still coddling Rob by buying him a $2.2 million mansion to live in with Blac Chyna.

“You are one of the world’s biggest liars,” Khloé tells her mom.

“I’m not a liar,” Kris retorts, defending her decision to pay for her son’s residence. “No, he has the money for the down payment.”

“I’m just allergic to bullshit,” Khloé quips, pretending to cough. “I have such deep fights with my family because I was ‘enabling’ Rob by letting him live with me and the one person who yelled at me the most was my mom. And now she’s helping Rob? I just find it mind-blowing.”

In previous clip for the show, Khloé and Kim blasted Rob for having “no loyalty” for his family.

“Chyna is Tyga’s ex and Kylie [Jenner] is dating Tyga now so it’s pretty complicated. But am I happy he’s out an about? For sure! Am I disappointed that Rob isn’t talking to me after he got out of my house? Yeah!” Khloé argued, claiming Rob’s only getting out of his shell for “pussy” and not his sisters. “I’ve been the only one that stood by him and defended him.”