Kim and Kourtney throw down on the 'KUWTK' season premiere

Yahoo Entertainment

On Thursday, Kim first got into a little argument with Kendall Jenner, after Kim claimed that she and Khloé work the hardest in the family. That's when Kourtney chimed in. "You have this narrative in your mind," said Kourtney, before going off on Kim, who thought she was joking. "I will literally f*** you up if you mention it again. Literally shut the f*** up and don't laugh like that. You look like a freak," Kourtney said, later adding, "But also, if I didn't want to work my ass off and I wanted to be a stay-at-home mom, that's f***ing ine." However, Kourtney was not joking and, to prove it, she chucked her water bottle at Kim before tackling her to the ground.

"What the f*** is wrong with you," Kim asked while Khloé attempted to calm her sisters down.

"I swear to God, I'll punch you in the face," Kim told Kourtney, who responded, "So do it. Do it already." And Kim did. 

Per usual, the Kardashian fam took to social media Thursday night to live tweet during the show.

As for Kourtney saying she was going to step away from the show after last season, the eldest Kardashian sister confirmed she has already quit, when she tweeted to a fan: "I did. Bye."

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