“The dad always shows up at the end just to, like, say thank you,” Tori explains to him in a PEOPLE exclusive sneak peek.
“My baby shower is this weekend. I’ve got a lot of family and friends coming from, you know, all over to celebrate,” Tori says in the clip, which was filmed in the months leading up to the May 12 birth of her son, Jackson Kyle.
“You know, I don’t know a whole bunch about what’s going on at the baby shower since all my friends are planning everything, ” she admits, and adds, “but I’m excited.”
- For more from Zach and Tori — including all about their love story and updates on the rest of the Roloff family — pick up the latest issue of PEOPLE, on newsstands now
“The baby showers I have been to, the dads always show up to just to say, ‘Hey, Dad’s here too — not just Mom, ‘” she reiterates to Zach before taking a contemplative pause. “Isn’t that weird, ‘Mom’ and ‘Dad’ ?”
“Do you know what I said today?” responds Zach, who, like his son, was born with achondroplasia, the most common form of dwarfism. ” ‘My son’ “
But the reality star isn’t sure that’s a term he’ll be using a lot as Jackson Kyle grows up.
RELATED VIDEO: Meet Zach & Tori Roloff’s Baby Boy!
“I don’t know if I’m going to say that, though. ‘My son.’ Like sun? The sun?” he says. “I want to say ‘my boy. That’s my boy.’ Yeah, that’s probably going to be more my thing.”
And Tori is in agreement: “That’s cute too.”
Little People, Big World airs Tuesdays (9 p.m. ET) on TLC.