These days, it's not so easy to keep up with the Kardashians. From how many kids Kim has to who Kylie is dating (* Drake rumors, cough cough*), their lives are a whirlwind. Well, something really crazy happened. Have you heard of the 'Kendall Jenner worst mom ranking?' 

*Spills tea*

Kendall agreed to rank her siblings from best parent to worst parent because that CLEARLY wouldn't cause any more family drama at home.

The supermodel appeared as a guest on James Corden's "The Late Late Show," along with her equally famous ex, Harry Styles who interviewed her and hosted the show! 

Is anyone else cringing already? We can't imagine what an interview by your ex would be like.

Here's the best (or worst) part of it all. The questions Harry asked her were for Corden's "Spill Your Guts or Fill Your Guts" show challenge.

If you haven't seen it before, celeb guests either have to answer painfully awkward questions or take a big gulp of disgusting things like cod sperm, bird saliva, and worse...

Unfortunately for Kendall, the first question she was asked was "You are one of the few members of the Kardashian/Jenner clan that does not have children. Rank your siblings, Kim, Kylie, Khloe, Kourtney, and Rob from best to worst parent."

If it were us, we would happily dodge a bullet and drink whatever creepy concoction Corden whipped up for us. 

But Kendall answered the question, totally dissing her sister on the show.

She ranked Rob Kardashian as the best parent (you get a gold star Rob), and then Khloe, Kim, and last Kourtney. Savage! 

What has Kourtney done to come in the last place? While Kendall didn't explain her rankings, it's possible that some damage has been done. 

However, she declined to answer who the least likable sibling is, so we have to give her some kudos for that.

None of the Kardashian clan have commented on Kendall's rankings yet, but we have a hunch they will soon. You can watch a clip of the video here.

Narcity is following the story for additional information. Stay tuned for more updates.