Kylie Kelce picks a side in husband Jason Kelce's feud with 'Big Mango'

Jason Kelce has made it clear that he is not a fan of "made-up holidays." And on Monday, he took his feelings to Twitter in response to a post about "National Mango Day."

"No it isn’t, it’s just a regular ass Monday. Eat a mango if you want, but don’t let Big Mango fool you into this nonsense," Jason wrote.

And Kylie Kelce just couldn't help but poke fun at her husband with an incredible post on her Instagram story.

With a picture of a mango, she wrote, "Just celebrating National Mango Day in the Kelce house!"

Kylie also added something small at the bottom: "IYKYK."

(For those that aren't familiar with that abbreviation, it's 'if you know you know.'

This isn't the first time Jason has posted about these made-up holidays. He did something similar on National Siblings Day in 2023.

"You guys know I don’t believe in these made-up days. Put this day right next to National TE day, and National Kitten Day. I celebrate National 'Take Your Made-Up Holiday and Shove It Day.'"

Travis, on the other hand, posted a nice tribute to his brother in 2023. But of course, he also had some fun.

"Had to wish my guy who loves made up holidays more than anyone a HAPPY NATIONAL SIBLINGS DAY!! ❤️," Travis captioned the video which included clips of Jason growing up.

So as New Heights posted, Jason's list of enemies continues to grow.

Kylie Kelce had hilarious reaction when asked to sign Jason Kelce jersey at 2024 New Heights Beer Bowl

Kylie Kelce, or as Jason affectionately calls her, Princess Kyana, was a big hit at the 2024 New Heights Beer Bowl in Sea Isle City, N.J. this past week.

The event raises money for the Eagles Autism Foundation, which Kylie is very involved in. And so she joined Jason, supporting the foundation and her husband throughout the two days.

On the first day, Kylie was signing autographs for some lucky fans and one threw her a No. 62 Eagles jersey. (For those that don't know, that's the number Jason wore during his long career in Philadelphia.

And Kylie couldn't believe that someone asked her to sign it.

"You want me to sign this," Kylie questioned the fan. "It's gonna ruin it!"

Clearly she doesn't understand how much Philly fans love her.