King Charles' heated exchange with Camilla hints at behind-the-scenes tension

King Charles seemingly had a tense conversation with Queen Camilla during the Trooping the Colour parade.

A lip reader suggested that the monarch made some frustrated remarks while riding in the royal carriage.

The event, which was held to celebrate the King's official birthday, was also attended by Kate Middleton and her children, who travelled in a separate carriage.

Meanwhile, Prince William and Princess Anne followed Charles carriage on horseback. However, what caught attention of royal fans was a heated exchange between the King and the Queen.

According to The Mirror, a lip reading expert Jeremy Freeman has revealed what Charles told Camilla, "Absolutely crazy, disgrace, absolutely extraordinary."

Although Jeremy wasn’t able to interpret the full conversation, he did pick up Charles saying he was “on his way out” and then adding, "Meanwhile, not like me.”

“That's the difference between me and him,” the monarch added, per the lip reader.

While it’s not clear whom the monarch was referring to, reports suggest it might be his brother Prince Andrew, with whom he shares a strained relationship.