“You are one of the few members of the Kardashian-Jenner clan who does not have children," the singer said as Kendall braced herself for what would no doubt be a challenging question.
"Rank your siblings Kim, Kylie, Khloe, Kourtney and Rob from best to worst parent."
After sniffing the eggnog and subsequently gagging over its awful smell, Kendall weighed up her options before admitting Kourtney's the worst parent to her three children, Mason, Reign and Penelope.
"I will start by saying they are all amazing parents, they really are," the runway model began. "I’d say Rob is number one, he is so good to his daughter and then I mean that’s so hard they’re all amazing."
It's no secret Kourtney has rubbed her sisters the wrong way in recent months, with dozens of feuds between herself and Kim playing out on this season of Keeping Up With The Kardashians.
Earlier this week, Kim criticised Kourtney— who has devoted the last few years to building her health and wellness brand— for serving sugary treats at her Poosh event, after berating Kim for wanting unhealthy snacks at their daughters' joint birthday party.
"There is a candy bar here that is not sugar-free or gluten-free, I don't know what to do, I don't know what to say," the KKW Beauty founder said sarcastically. "Well, at least it's plastic-free."
And with the mum-of-three no longer close to her siblings, it makes sense she announced last month that she's decided to quit their long-running reality show. However, despite claiming her departure was based on wanting to spend time more time with her kids, those closest to the star are calling her bluff.
An insider friendly with Kourtney and Kim— who is well aware of their strained dynamic— recently told Radar Online she didn't leave the show on her own accord, rather was pushed out by her younger sister.
“Kourt is accusing Kim of forcing her off the show by belittling and cutting her out of the loop for months if not years now,” the pal dished, adding she was backed into a corner and had no choice but to tap out. “She’s convinced this all started because Kim got jealous that she was losing her divine right to be next in line to her mom, and bit by bit she’s used her influence to undermine Kourtney at every turn.”
Kim's alleged actions align with claims tension between the pair continues when the cameras stop rolling, with rumours swirling they "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 in October. “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."
"Kourtney has much better things to do with her time thank kiss up to Kim," the source continued, adding Kim believes Kourtney "would be nobody without her".
She all but confirmed this was accurate during a recent interview in which she was asked why she and the Skims founder constantly bicker.
"It's up and down a lot," she said of their relationship on The Real, before the journalist asked why both Khloe and Kim were shooting daggers at their sister. "Because they gang up on me all day," she angrily added before Kim interjected, saying: "Welcome to my life. That's what you did to me my whole life until two years ago."