Melania Trump gave husband Donald brutal five-word order when photo 'went wrong'

Who wears the trousers in Melania and Donald Trump's marriage is a question that has long been contended amongst experts.

According to one of the President's own sons, however - who cited an occasion whereby the First Lady brutally grilled her husband over a photo op - despite the latter being one of the world's most powerful men, it's the former that runs the show.

The savage telling-off is said to have occurred earlier this year, with Eric Trump recalling his take on the moment in his brand new memoir, Under Siege: My Family's Fight to Save Our Nation.

For anyone intrigued by the businessman's right-wing work, it's being advertised by promoters as an 'unfiltered look at the highs and lows of life in the Trump world', and it said to hone in on his family's controversial White House reign.

Eric recalled a brutal interaction between his father and stepmother (Kenny Holston-Pool/Getty Images)

One aspect of the political biography centres specifically on the recent christening Eric and wife Lara arranged for their children, locating the religious festivities in their grandfather's presidential residence.

The ceremony, 41-year-old Eric remembers, took place in the building's East Room, with the kids receiving their splash of holy water directly beneath the famous portrait of Abraham Lincoln.

Donald, 79, and Melania, 55, were, of course, in attendance for the big day - and according to Eric, became embroiled in a bitter disagreement shortly after the baptism took place.

"For Lara and me, having Luke and Carolina baptised there just seemed natural," the father-of-two writes. "My father could leave the Chinese delegation, or whatever the meeting of the day, and Luke and Carolina could feel the beauty of the building, and a movement that was now engrained in their DNA.

"After the baptism, my father picked up his new grandson and held him for a photo.

Melania reportedly told off the President (SAUL LOEB/AFP via Getty Images)

"Right on cue, and still dripping with water, Luke started to cry."

For several seconds, Donald and Melania are said to have floundered, and eventually, after the President urged to reach out for the child, the Slovenian-born First Lady stepped in, issuing her husband with a short, sharp demand.

"Donald, you run the country," she reportedly uttered, before taking the crying child into her arms.

This isn't the first time that Melania has been praised for her ability to control the Republican leader, with the mother-of-one herself previously claiming she's been bossing Donald around since their earliest days together.

Not long after first meeting the politician at a 1998 New York Fashion Week party, Melania was asked for her phone number.

Apparently, however, she hadn't been left impressed by the fact her future-husband was romantically-involved with multiple women at the time.

Melania later told Harper's Bazaar in 2016: "He was with a date, so of course I didn’t give it to him."

Melania implied she'd always worn the trousers (LEFRANC DAVID/CORBIS KIPA/Sygma via Getty Images)

Instead, she told him: "'I am not giving you my number; you give me yours, and I will call you.'"

Apparently, this was to suss what type of number he'd give her, with Melania adding: "I wanted to see if it was a business number. What if it’s business?"

Hoping to win her over, however, Donald is said to have offered the former model all of his possible contact numbers - including one for his office, his Mar-a-Lago residence, and his home number for New York.