Today's Karl Stefanovic mocks Meghan and Harry's 'emotional' hobby

Karl Stefanovic was unable to contain his laughter on Tuesday while discussing Meghan Markle's new children's book that was inspired by a poem she wrote for husband Prince Harry on Father's Day.

The Today show host was surprised the book, called The Bench, stemmed from a poem and for some reason found it hilarious.

Nine's US correspondent Amelia Adams talked through the origins of the book, with Karl finding it ridiculous the Sussexes might write each other poetry in their spare time.

The segment began with Karl's co-host Allison Langdon questioning the words on her autocue which compared Meghan to famous children's authors.

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"Meghan Markle is joining the ranks of Roald Dahl and J.K. Rowling - oh, a stretch - by writing her first children's book about the bond between fathers and sons," she said.

Allison also shared there would be an audiobook, with Amelia unable to hide her sarcasm.

"Yeah, can you imagine anything better? I mean, pop it on in the car, pop it on at home when you're cooking dinner. Meghan's dulcet tones," Amelia said.

Karl slammed his desk, bursting into laughter saying, "They actually write poetry together!"

One Twitter user didn't appreciate his response, however, and wrote, "[Karl], I saw a clip of your reaction... rude and unnecessary. Don't buy the book if you don't like it, it's that simple. No need to mock."

According to the publisher, The Bench is about the relationship between a father and son, through a mother's eyes, and is based on Harry and Archie.

"The Bench started as a poem I wrote for my husband on Father’s Day, the month after Archie was born," the former Suits star said in the announcement.

"That poem became this story. [Artist] Christian [Robinson] layered in beautiful and ethereal watercolour illustrations that capture the warmth, joy, and comfort of the relationship between fathers and sons from all walks of life; this representation was particularly important to me, and Christian and I worked closely to depict this special bond through an inclusive lens."

Speaking about her aim for the book, Meghan said: "[I hope it] resonates with every family, no matter the makeup, as much as it does with mine".

Meghan isn't the first royal to write children's books with Prince Charles and Sarah Ferguson, the Duchess of York, also penning books for kids.

Meghan's book has been met with positivity and some surprise from fans on social media.

"I’m so excited for this!" wrote one on Instagram.

"So proud of her," added another.

"Well... I didn't see it coming," said a third.

The Bench will be published by Penguin Random House and is available for pre-order for AUD$25 now.

Additional reporting by Gillian Wolski.

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