"Well, that's really not fair," Kourtney replies. "It's just like, I can't even live my life. I can't even go anywhere."
"He needs to get a f**king life and leave me alone," she adds. "All he does is try to make everybody else feel bad for him, and to try to make me look like the bad guy in this situation when clearly I'm not from, you know, 10 years of this going on."
Kris chimes in, asking Kourtney if she'd be sad if he "truly" left her alone.
"He sits there and feels bad for himself," Kourtney says. "Why can't he get it together?"
In another teaser for KUWTK's latest episode, airing Sunday at 9 p.m. ET/PT on E!, Kim Kardashian West absolutely loses it when she discovers unflattering photos of herself online while trying to relax during her private vacation in Mexico.