Caitlyn Jenner is not ready to talk about gender confirmation surgery with her former wife, Kris Jenner.

In a sneak peak of Sunday's "Keeping Up with the Kardashians," the gold medal-winning Olympian stopped by the home the former couple used to share to bring Kris a copy of her new memoir, "The Secrets of My Life."

The subject of gender confirmation surgery comes up after Caitlyn inquired about retrieving the gun she left behind when she moved out.

"The only problem that I have with the gun is it's registered in my old name," she told Kris. "I've got to get that changed. I've got everything changed, but in some states, I think if you go through gender confirmation surgery, it's the only way you can ..." she continues, trailing off.

Kris also asked if gender confirmation surgery is something Caitlyn would have done.

"You know what, don't even go down this road 'cause I'm not talking about it," Caitlyn responded before changing the subject.

In an effort to lighten the mood, Kris mentioned that she always wondered why Caitlyn would "pee sitting down."

"When you're struggling with your identity, there are little things that you can do," Caitlyn said. "It just makes you feel better about yourself."

"It's kind of perfect," Kris responded. "I never had to yell at you for not putting the seat down."

In another clip from the episode, Jenner said everything in Caitlyn's memoir is phony.

"Everything she says is all made up," Jenner said in a conversation with Kim and Khloe. "Why does everything have to be that 'Kris is such a bitch and an asshole?'"

"I read it and basically the only nice thing she had to say was that I was great socially at a party one time," Kris said.

Caitlyn is set to release her memoir "Secrets of my Life" on Apr. 25th. A few excerpts from the book have already been released, and the Kardashian-Jenner clan is apparently less than pleased.

"I really tried hard to improve the relationship and spend a little bit of time, thinking maybe there's something here that I'm not seeing," Kris said. "I've done nothing but open up my home and my heart to a person who doesn't give a shit. So, I'm done."

"I've never been so angry and disappointed in somebody in my whole life."

"Keeping Up with the Kardashians" airs Sunday nights on E!

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