The episode also got a peak into Jenner's new home, equipped with a new wardrobe for his transition.
This revelation on Sunday's show follows the E! special earlier in the month, "About Bruce," where the former Olympian explained the future surgeries to his kids: Kim, Khloe, Kourtney, Kylie and Kendall.
"It's a lot of work, you do it in stages," he said, citing changes to his forehead and jaw, among other things.
Kourtney brought up the question of when Bruce would fully become a woman, like does he just "pick a day, like, 'This is the day I'm going to just wear this stuff," referring to women's clothes.
Kim followed that up by asking whether Jenner had any surgery planned to fully make him a woman. "Oh, the little thing down there?" he candidly responded.
"That's kind of the last thing you can do," Jenner said, adding that he did not have a plan to have sex change surgery at the moment of the taping a few months back.