Watch Kendall Jenner Chew Rob Kardashian Out for Giving Her iPad to Blac Chyna

Blac Chyna recently squashed any beef she had with the Kardashian-Jenner gals, but a few months ago, she was responsible for a huge fight between Rob Kardashian and Kendall Jenner. And thanks to a little show called Keeping Up with the Kardashians, you can see it all go down.

E! released a sneak-peek clip of the show's 12th season--which premieres Sunday, May 1--and in it Jenner is not too pleased with her half brother. The reason? He re-gifted an iPad she gave him to Chyna, and she found out via social media. Ice cold.

"Rob is dating someone that has kind of had a bad history with my family and he fully re-gifted my gift," Jenner says in the clip, which we included above. "On top of it, it's so annoying to find out through social media because his girlfriend posted it, like there's some things that just aren't cool and I don't think this is very cool."

It definitely isn't. iPads are hella expensive--even for Jenner--so it's pretty awful Kardashian just gave his away. To a sworn family nemesis, no less. "Yo, um can I have my iPad back? No, Bible I want my iPad, my pen and my keyboard back...Because if you're not gonna use it I have someone who actually is really dying for it!" Jenner says to Kardashian in the video.

But Kardashian doesn't hold back. "That's the first time you've ever got me a gift your entire life!...Buy it yourself, you moron!" he says to his baby sis.

So much for sibling love. We're terrified. Watch it unfold in the video. We're team KenKen on this one!

VH1 staffers bring Kylie Jenner and Tyga's relationship timeline to life in the following video.