Rob threatens Kourtney to disparage family in public over girlfriend's disrespect

In the recent episode of 'Keeping Up With the Kardashians', Kourtney Kardashian reveals the bitter conversation she had with her brother Rob over Blac Chyna's 'ChyMoji' app.

The 37-year-old American TV personality told his friend Mario Dedivanovic that she was disappointed to see a Kylie look-alike emoji getting slapped, reports Us Weekly.

Reports about Chyna and Jenner having a tussle after the 19-year-old started dating Chyna's ex-fiance Tyga have long been there.

"This was the first time that made me question Chyna's intentions. Like, I usually don't let any of this stuff bother me, but for some reason this just sets me off," Kourtney speaks about her brother's pregnant fiancee.

Kourtney further revealed that when she went to meet Rob on Jenner's suggestion, the 29-year-old sock designer lost control and threatened to disparage the family at a public event.

"I went off on him yesterday. He's like, 'I'm going to go on the red carpet tonight, and I'm going to tell everybody how I have the worst, most unsupportive, disgusting family.' Like, ridiculous. But I think it's stupid to take it there," Kourtney tells Dedivanovic.