Landon Barker is pooshing his big brother duties to the side.
The 20-year-old confessed that he won't be involved in some of the day-to-day activities of taking care of dad Travis Barker and stepmom Kourtney Kardashian's baby boy Rocky Thirteen, who was born Nov. 1.
"Have you changed any diapers yet?" Jess Lucero asked on SiriusXM TikTok Radio, as seen in a Nov. 29 clip. Landon responded, "I have not. And I will not be."
In fact, the budding musician confessed, "I actually haven't even held it."
Landon also acknowledged that he was hoping for another little sister to join 17-year-old Alabama Barker in the family. (Travis welcomed both kids with ex-wife Shanna Moakler.)
"I totally was rooting for a little girl," Landon noted, echoing a sentiment he shared in September, when he said on the Zach Sang Show, "I wish I was the only Barker boy."
Needless to say, getting a younger brother is a totally new and "crazy" experience for him.
"I've never really had a baby sibling. It's always been me and my sister, two years apart," he explained at the time. "It's cool though because it'd be different if it happened when I kinda need the attention as a kid."
As for Alabama, she previously told E! News that she was ready to welcome Rocky into their home sweet home.
"I just think having another family member is always awesome," the teen shared. "And getting to know a new person, it's gonna be so fun and so exciting!"
Want a deeper dive into Travis and Kourtney's family of nine? Rock out to more of their blended family photos here:
A Fashionable Family
Kourtney and Travis took Alabama to Tommy Factory's New York Fashion Week show in September 2022.
Mom & Me Mirror Selfie
Penelope Disick—who Kourtney and ex Scott Disick share alongside sons Mason Disick and Reign Disick—appeared with her mother in a vacation selfie from Australia.
Australian Summer
Reign and Penelope enjoyed some fun in the sun during their family trip to Australia for Blink-182's tour.
Kravis Down Under
Kourtney and Travis enjoyed some touristy activities in Australia.
Boys Club
In honor of Landon's 20th birthday in October 2023, Kourtney shared a throwback photo from 2017 of the then-teenager hanging out with Mason.
Girl Gang
Alabama snaped a silly selfie with half-sister Atiana, as well as Kourtney and Penelope, during the Kardashians star's May 2022 wedding with Travis.
Here Comes the Bride
Kourtney took a break from her wedding festivities in to pose for a selfie with Alabama in May 2022.
Meet the Kardashian-Barkers
Travis took Alabama, Landon and Atiana to the premiere of The Kardashians in April 2022. Meanwhile, Kourtney was joined by Reign.
Front Row
Kourtney's oldest son Mason tagged along with Alabama and Atiana to Travis and Kourtney's front row outing at the AMIRI fashion show in February 2022.
Celebrating Dad
Kourtney Kardashian and Travis Barker was joined by Landon Barker—who he and ex Shanna Moakler share alongside daughter Alabama Barker and stepdaughter Atiana De La Hoya—at GQ's Men of the Year party in November 2022.
Alabama and Penelope
Kourtney shared a close up of this sweet throwback of Alabama and Penelope for Alabama's 17th birthday.
Birthday Bunch
Kourtney, Travis, Alabama, Atiana, Landon and Reign posed at Disneyland in April 2022.
Magic Kingdom
The group spent the day at the Happiest Place on Earth in honor of Kourtney's 43rd birthday.
The Three Mouseketeers
Landon, Atiana and Kourtney bonded over a fun snapshot.
A Portrait by Penelope
Penelope the artist! Travis shared her drawing of him in March 2022.
Family Portraits
On Christmas Eve 2021, the Kardashian-Jenners joined the Barkers for a night of celebrations.
Fun and Games
Travis and Penelope enjoy a game of checkers, while Kourtney and matriarch MJ Houghton watch the pair.
The Sweetest Age of All
For Alabama's 16th birthday in December 2021, Kourtney and Travis surprised her with balloons that spelled out "BAMA 16."
Travis wrote in caption, "I LOVE YOU SO MUCH!!!"
TikTok Fun
Travis appeared with Kourtney and Penelope in a TikTok video posted on the mom-and-daughter duo's joint account.
Welcome to the Fam
"So happy for you guys," Travis' daughter Alabama wrote on a photo celebrating the couple's engagement. "I love u both!"
Amusement Park Fun
Landon joined his dad and Kourtney for some Halloween 2021 fun at Knott's Scary Farm in Southern California.
All the Halloween Activities
Kourtney recruited her son Mason for a trip to Universal Studios' Halloween Horror Nights with Travis and his daughter Alabama in 2022.
Frankenstein Friends
Atiana posed as the Bride of Frankenstein to Reign's Frankenstein during the spooky outing.
Costume Cutie
Kourtney's daughter Penelope rocked a devil costume as the crew headed to the Los Angeles immersive jack-o-lantern experience Nights of the Jack.
A Memorable Moment
During their Nights of the Jack adventure, Alabama captured Travis and Penelope sharing a sweet moment as he walked around carrying her on his shoulders.
The Ultimate Throwback
Even before they were dating, Travis and Kourtney were friends for years. Just look at this throwback photo of Mason, Landon, Alabama and Penelope from 2017.
Rockstar Training
Talk about a sweet birthday present! Travis gifted Kourtney's daughter Penelope a state-of-the-art drum set when she turned nine back in July 2021.
Family Photo
What better place to spend the Fourth of July 2021 than Disneyland? The happy couple celebrated the holiday there with Landon, Alabama and Reign.
Twinning
Atiana opted to twin with Kourtney in matching snow gear during their first family trip together in Deer Valley, Utah, in April 2021.
Snow Day
Who needs to hit the slopes when you've got snowmobiles? Alabama joined in on the fun in this candid snap of her, Kourtney and Atiana.