The adult actress and director, whose real name is Stephanie Clifford, also described her belief that Mr Trump would never secure the 2016 Republican nomination, and that he never even wanted it in the first place, writing, "It will never happen, I would say … He doesn't event want to be president."
Ms Daniels has defied a non-disclosure agreement she reportedly made with the president’s former personal lawyer and longtime fixer, Michael Cohen, in multiple televised interviews, from 60 Minutes to The View. Her new book is expected to be just as controversial as those sit-down discussions, as she has said she’s "not holding anything back" about her thoughts on Mr Trump, who has denied sleeping Ms Daniels in 2006.
A copy of Full Disclosure was obtained by The Guardian. In it, Ms Daniels wrote about the president’s goal of getting her on his reality TV show, The Apprentice, vowing to help rig the contest in her favour.
All it supposedly took for her to garner such interest from Mr Trump was engaging in the “least impressive sex I’d ever had,” as she described it — "but clearly, he didn't share that opinion".
"He knows he has an unusual penis," Ms Daniels wrote about Mr Trump. "It has a huge mushroom head. Like a toadstool … like the mushroom character in Mario Kart."
Thank you for helping get the word out about my book Full Disclosure https://t.co/fisfkIn6tt— Stormy Daniels (@StormyDaniels) September 17, 2018
The crux of the book revolves around her decision to go public about the alleged affair to protect herself and her daughter after being threatened in a car park in 2011. Ms Daniels says she was told not to tell her story - Mr Trump has called the threat a "con job". It details her feelings of fear around signing the $130,000 hush agreement with Mr Cohen on the eve of the 2016 election. Mr Trump has admitted to reimbursing Mr Cohen the money.
Some of the details about her alleged experiences with the president are more politically extraordinary than salacious, although Ms Daniels opinions of the Trump presidency appear relatively rarely.
In one instance, Ms Daniels claimed Mr Trump received a phone call in front of her during the 2008 presidential election from the woman he would eventually run against for the Oval Office — while she was competing against Barack Obama fork the Democratic ticket in 2007.
"Then, to make it crazier, Hillary Clinton called," she wrote. "He had a whole conversation about the race, repeatedly mentioning ‘our plan’ …"
As one of New York’s most prominent businessman and someone who has expressed political interests for decades, it might appear obvious that Ms Clinton, a former New York senator, would call Mr Trump at least once along the campaign trail to gauge his thoughts on the race. However, according to Ms Daniels’ account, it did not appear he was entirely interested in the race as much as he cared about the annual Shark Week show.
Ms Daniels added, "Even while he was on the phone with Hillary, his attention kept going back to the sharks."
Full Disclosure also provides details of Ms Daniels’ childhood in Louisiana, including a story of sexual abuse she allegedly faced at just nine-years-old.
The book, set for release next month, features the same defiant voice Ms Daniels has expressed ever since coming forward about her alleged affair.
"The deck has always been stacked against me," she wrote, but "I own my story and the choices I made."