Prince Harry was once branded as 'nuts' by his old Eton friends after he continued to be reprimanded by Meghan Markle for 'sexist' comments.
The incident is broken down in Tom Bower's new book, Revenge: Megan, Harry, and the War Between the Windsors.
It highlights the sit-down with 16 of Harry's closest friends.
The meeting included risky comments, colorful language and conflicting views.
It reportedly got to the point where even Harry "didn't anticipate Meghan's reaction" which came after "endless pranks, jokes - and lots of drinking".
An excerpt from the new book, highlighted by The Sun Features, includes a brief overview of the entire night.
It read, "Her jokes, which included sexism, feminism and transgender people, were ricocheted around the living room and dining room.
"Without hesitation, Meghan challenged every guest whose conversation violated her values
"According to Harry's friends, he repeatedly reproached them about the slightest inappropriate nuance. No one was exempt."
Some of Prince Harry's friends began to 'raise concerns', even after countless reprimands, that Meghan Markle's "vokery" would make it impossible to "make Harry's world his world".
They also shared the 'fears' surrounding her "lack of humour" and even continued in the car until the next day, where phones pinged with accusations and a friend even called. wrote, "Harry must be [outrageously] insane."
Other events, such as Skippy's wedding, and Prince Harry's friend Tom Inskipp from Eton, were also featured, and included accounts of Meghan Markle acting 'princess' and Harry's refusal to eat and eat with friends. .