He reportedly recalled how Meghan was “bouncing on a giant purple ball” when she went into labour while Harry placed a photograph of his late mother, the former Princess of Wales Diana, in the delivery room.
According to MailOnline, which said it had obtained a copy of the book, Harry wrote: “Meg was so calm, I was calm too.
“But I saw two ways of enhancing my calm. One: Nando’s chicken (brought by our bodyguards). Two: A canister of laughing gas beside Meg’s bed. I took several slow, penetrating hits.”
He also reportedly revealed how when the nurse came to give the duchess laughing gas, or nitrous oxide, for the pain, there wasn’t any left.
“I could see the thought slowly dawning. ‘Gracious, the husband’s had it all,’” he continued. “’Sorry,’ I said meekly.”
The duke also reportedly quipped that he “didn’t touch the laughing gas” during the birth of his daughter Lilibet Diana Mountbatten-Windsor in 2021 “because there was none”.
Prince Harry’s book was leaked after it was accidentally put on sale in Spain five days before its official release date on 10 January.
It reportedly covers a wide range of subjects from his relationship with William to his struggles coping with the death of Diana in 1997.
You can follow live updates about Harry’s book here.