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Elton John's New Book Reveals The Queen Playfully Slapped Her Nephew: 'Don't Argue With Me, I'm The Queen'

I probably don't have to tell you that the Queen is one BAMF.

But, just in case you needed a reminder, this crazy story from Elton John's new autobiography should do the trick...

If you thought the movie "Rocketman" was the only glimpse into Elton John's life, think again.

Instagram | @eltonjohn

The iconic musician is releasing his first-ever autobiography on October 15.

The memoir, which is titled "Me," tells the life story of the living legend.

And, based on a few already-released extracts from the book, this includes some juicy secrets about the royal family.

For instance, he wrote about his complicated friendship with Princess Diana.

He began by saying that he first met Diana in 1981.

It was "just before her marriage to Prince Charles. It was at Prince Andrew's 21st birthday party at Windsor Castle. The evening was completely surreal."

He went on to say that Diana's kids — Harry in particular — have inherited her "incredible social ease."

Instagram | @dussexroyal

The singer described this as "ability to make people feel totally comfortable in her company."

In addition to being "fabulous company," Elton described Diana as a "real gossip" who would answer pretty much anything.

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Things took a more serious turn when John detailed what led to their public falling out.

It had to do with Diana backing out of writing the foreword in the book Rock And Royalty by Gianni Versace.

"Then she got cold feet," Elton wrote. "I think Buckingham Palace didn't like the idea of a member of the Royal Family having anything to do with a book that featured shots of naked guys with towels draped around them."

Instagram | @eltonjohn

"I wrote back to her, calling her out, telling her how much money she had cost the AIDS Foundation, reminding her that she had seen the book."

The letter he got back from Princess Diana was very "formal and severe."

They didn't talk to again until the day Gianni was murdered.

At the funeral, she came up to John and said, "'I'm so sorry. It was a silly falling-out. Let's be friends.'"

Judging from Elton's next surprising revelation, that story was just a glimpse into what goes on behind closed royal doors..

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That's because the singer detailed the time the Queen once playfully slapped her nephew, Viscount Linley, across the face.

The now-infamous slap went down during a royal party that the singer attended.

Instagram | @theroyalfamily

The monarch had asked her nephew to go check on his sister during the party.

His sister had become ill during the festivities.

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Because the nephew put up a fight over leaving the party, the Queen didn't take to that lightly...

Elton wrote: "When he repeatedly tried to fob her off, the Queen lightly slapped him across the face, saying:

"'Don't' — SLAP — 'argue' — SLAP — 'with' — SLAP — 'me' — SLAP — 'I' — SLAP — 'am' — SLAP — 'THE QUEEN!'

Uhhh... something tells me this isn't something they teach you in etiquette school!

"That seemed to do the trick," John said.

Instagram | @eltonjohn

To add to the craziness, John said the Queen had seen him staring during the whole thing.

"As [Linley] left, [the Queen] saw me staring at her, gave me a wink and walked off."

So far, representatives from Buckingham Palace have declined to comment on the story.

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Whether it happened or not, let's not forget that he and the Queen go way back.

He knows her pretty well! The Rocketman even said that the Queen "could be hilarious" in private.

"I know the Queen's public image isn't exactly one of wild frivolity, but I think that's more to do with the nature of her job: she can't exactly sit there cracking jokes during the State Opening of Parliament," he wrote.

Judging by his story, there's definitely more than meets the eye with this monarch.

For more royal gossip, John's autobiography, "Me," is out Oct. 15!