Kristen Bell fans shocked as she jokes about Dax Shepard killing her in bold post

Kristen Bell and Dax Shepard recently celebrated their 12th wedding anniversary on Friday (October 17), and the actress shared on her social media what her husband said to her on their special day.

Bell and Dax Shepard, who share two daughters, Lincoln, 12, and Delta, 10, first started dating in 2007 before they officially tied the knot in Beverly Hills on October 7, 2013.

The stars are very much open with their fans about their personal lives, with topics like sex and parenting their children not being off the table of discussion.

And recently, the celeb couple celebrated their 12th wedding anniversary over the weekend. Like any couple sharing a huge relationship milestone, they took to social media to share it with their followers, though what Bell said in her celebratory Instagram post has divided a few people.

The picture was of the couple sharing a hug, while The Gossip Girl alum wrote: "Happy 12th wedding anniversary to the man who once said to me: 'I would never kill you. A lot of men have killed their wives at a certain point."

"'Even though I’m heavily incentivized to kill you, I never would,'" she added with a red heart emoji.

While people acknowledged that the couple are renowned for 'oversharing' intimate details, such as publicly posting nude images, albeit with private parts censored out, and appear to share a unique sense of humor, there were some things that should be kept between the two of them.

"My husband and I say out-of-pocket stuff to each other because we know it's a joke, but we don't tell people," one Reddit commenter weighed in. "Especially not strangers."

"I'm glad they get each other’s humor. And I’m glad I do not," chimed a second, while a third said: "Exactly this. I get that it's supposed to be funny, but I did not laugh."

Meanwhile, someone else said that 'making these kinds of jokes in private when you know each other well can be completely fine, but telling the rest of the world is just weird'.

The insight comes as the 50-year-old Parenthood star recently celebrated a major milestone.

Bell thanked her husband for staying sober in a post alongside several images of Shepard hugging their daughters.

"This is what 21 years of sobriety looks like. Lots of hugging," she wrote in the Instagram caption. "Hugging everyone and everything. Hugging life. Thank you for getting sober, @daxshepard. I am eternally grateful to have you. We all are."

The Veronica Mars star also raised eyebrows when she quipped to E! News earlier this year: "Even if Dax hooks up with the most beautiful person in the world at work, I know he's committed to our family."

UNILAD has contacted Bell and Shepard's reps for comment.