"Is she Kylie's age?" Kourtney Kardashian's mom asks Disick.
Kris Jenner seems to genuinely care who her daughter's baby daddy is dating and she's not afraid to be upfront about it.
"I guess that's what the kids are calling it," Disick says.
Eventually, Jenner stops the back and forth banter to boldly ask if the rumor that he's dating Sofia Richie is true.
"I mean, I guess you know who it is," he says.
"Wait, so how old is she?" Jenner asks. "Because I really don't know. Is she Kylie's age? 20?"
Disick uncomfortably explained that there is an age gap, considering she is 19 and he is 34.
"You're 34? OK, so I was 17 and Robert was 12 years older," Jenner says.
"You were underage, she's not," Disick shoots right back, eliciting a "touché" from his kids' grandmother.
Watch "Keeping Up With the Kardashians" Sundays at 9 p.m. on E!