According to an Express UK report, Princess Diana reportedly 'mocked' Prince Charles and Camilla's extremely lewd chats that were leaked to British tabloids in the early '90s, after her meeting with the future king The marriage was broken.
The claim was made by Diana's former personal protection officer, Ken Wharf, who wrote about Diana's reaction to the leak in his 2017 book Guarding Diana: Protecting the Princess Around the World.
According to Wharf: "The reaction was brutal. The establishment figures generally loyal to the future king and country were shocked, and some questioned the prince's suitability to rule.
Then he added: "Cartoonists mocked him in the press. One cartoon in which he was talking dirty to his plants, a particularly amused Princess Diana, who burst into laughter when he saw it.
The scandal in question involved tapes of a phone call between Charles and Camilla, published nearly a year after the formal separation between Charles and Diana.
Charles and Camilla's affair was revealed after Diana was exposed in an all-all biography written by Andrew Morton, however, the crude content of the phone call managed to grab global headlines at the time.