Chrissy Teigen’s son Miles can't get enough of his adorable first word, and neither can we

Chrissy Teigen and John Legend have a bona fide yes man on their hands.

Teigen shared an adorably sweet video of their 1-year-old son, Miles, reciting his first word Thursday, and by the looks of it, the toddler can't get enough of saying "yeah."

In the Instagram video, Miles continually says "yeah" while sitting in his high chair as grandma Vilailuck Teigen asks if he loves his mother, father and big sister, Luna, 3.

"When your first word is 'yeah!'" Teigen captioned the post.

Fans couldn't help but notice Miles' slight hesitation when asked if he loved his big sister, leading many to jokingly speculate that a sibling rivalry is already brewing in the Teigen/Legend household.

"He has to think if he loved Luna. Typical brother behavior," @itsbrooklynjoneswrote wrote, while user @xxchantelmariexx said: "I love how he pauses before he says yes he loves Luna."

Related: Chrissy Teigen shuts down 'baby bump' question with sensitivity to those struggling with infertility

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when your first word is “yeah!”

A post shared by chrissy teigen (@chrissyteigen) on Jun 20, 2019 at 5:37pm PDT

Miles' first word is a welcome change for Teigen, who revealed that, "Luna’s first word was 'no.'" She added, "They're exactly us."

The cookbook author and "Lip Sync Battle" host has been celebrating many milestones in her children's lives, including Luna's first trip to the dentist office earlier this week.

Chrissy Teigen is being mom-shamed again: This time over Luna's first trip to the dentist

"So proud of my toons at her first dentist appointment!" Teigen captioned an Instagram video of Luna brushing a stuffed animal's teeth while sitting on grandma Teigen's lap.

However, the reaction was much different. Teigen got drilled by fans who questioned why she didn't take Luna to the dentist at an earlier age.

"Was waiting for this," Teigen replied to the mommy-shamers. "U guys never fail me."

More: John Legend speaks out about that time Chrissy Teigen was mom-shamed and why he changes diapers

This article originally appeared on USA TODAY: Chrissy Teigen’s son Miles can't get enough of his adorable first word, and neither can we