Tension reached boiling point when they played a game of "never have I ever", with Khloe— who's mum to True Thompson— outing Kourtney for pashing a girl.
"You kiss girls," Khloe said, with a furious Kourtney pretending she had no idea what they were talking about.
After an uncomfortable moment of silence, she finally admitted to pashing a woman during a boozy girls' trip.
The telling quotes come two months after a source close to the Kar-Jenner clan claimed tension between Kim and Kourtney always continues when the camera stops rolling, with rumours swirling the pair "can't stand to be in the same room as each other".
"Kourtney has hated Kim for a couple of years now. She thinks she’s vapid and mean," a well-placed insider told Radar Online. “Their egos have clashed big time and when the cameras aren’t on, they don’t speak. There are hints of their feud, of course, but the reality is they genuinely can’t stand each other.”
While the source claimed Kourtney "has much better things to do with her time than kiss up to Kim," the KKW Beauty founder apparently believes her older sister should appreciate her more, seeing as Kourtney would "be nobody without her".
Tension reached boiling point between Kim and Kourt— who recently admitted she hopes their show comes to an end soon— during a recent episode of their reality series after Kim accused her sister of being "ungrateful" and "stealing her style".
“Kim and I just got into the biggest fight,” the wellness obsessed star told her friends. “She just was going so crazy, she’s sending me the meanest text messages. You would die.”
“She’s like, ‘You’re the biggest, ungrateful bitch,’” Kourtney read from her phone. “So I said, ‘God, you’re such a petty woman.’"
Meanwhile, Kim unloaded to her mum Kris Jenner about their brutal screaming match.
“She just is such a bitch, like on another level,” Kim said. “Kourtney screamed at me on the phone. And was like, ‘You think I like your style? You have the lamest style.’ “
Things took a turn for the worse when Kourtney slammed Kim's "terrible attitude".
“You’re going to school to become a lawyer and help the world and these are the kinds of problems you have?” Kourtney said before reading Kim’s response. “Then she’s like ‘You’re really a miserable human-being and you keep not understanding the issue because you all of the sudden turn into such a humanitarian and talk about the world’s issues which you’ve not contributed one ounce to the world.'”
Kim them threw the lowest blow of them all.
“I actually do s**t for the world and you f**king fake it all day long and act like, ‘Oh! There’s people dying, Kim.’ And what the f**k are you doing about it? So, shut the f**k up.”