Khloe Kardashian Defends Robert Kardashian, Sr. Over Claims He's Not Her Father: 'Don't Talk About My Dad'

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You can say a lot about Khloé Kardashian, but she has her limits.

The 31-year-old reality star opened up about her late father, Robert Kardashian, Sr. and tabloid rumors that he was not her real father in a clip from Wednesday's Kocktails With Khloé.

"I think the thing that most became overwhelming was when the stuff happened with one of my dad's wives," Khloé said. "She wanted to come out like 10 years later, after my dad passed away, and say that I'm not his daughter and he confided in her and blah, blah."

"I was like, 'Listen, you can talk about me and my sisters all you f**king want, [but] do not talk about my dad,'" she concluded. "He's not here!"

WATCH: Kardashian Sisters Get Message Delivered From Late Father Rob Kardashian Via Teen Medium

Back in 2012, Khloé tweeted about the rumors, writing, "The audacity you have to mention my father’s name like this! Should be ashamed of urself! I let a lot of things slide but this one is really low… YOU ARE DISGUSTING! (yes you know who YOU are)"

Interest in the Kardashian patriarch has resurfaced with FX's The People v. O.J. Simpson: American Crime Story, where David Schwimmer plays the part. Though Khloé previously said she hasn't seen the show -- but wants to! -- she recently opened up about that time in her life.

"It was so crazy. People were really cruel during that time. They used to key 'guilty' on my dad's car [when] we were at church," the Keeping Up With the Kardashians star, who was 10 during the trial, revealed. "It was horrible at that time."

Kocktails with Khloé
airs Wednesdays at 10 p.m. ET/PT on FYI.

Meanwhile, the youngest Kardashian daughter got very candid as she discussed Kanye West's Twitter rants and her lady parts in a NSFW new interview. Get the details in the video below.