The reporter started to repeat the rumour before the prince interrupted.
Prince Charles: "Oh, don't believe all that crap".
"Old school pals catching up from #timbertop", Ms Ryan wrote on Instagram.
Prince Charles isn't the only member of the royal family now facing revealing claims from an unauthorized biography.
An image of the pair was shared online on Wednesday.
A 27-year-old man was taken to Gold Coast University Hospital, and another man, 42, was taken to hospital as a precaution.
Martin is adamant Camilla enjoyed the festivities. "I look forward to seeing him again", Turnbull added.
The schedule for the couple's six day tour was jammed packed, with the pair on Aussie soil to open the 2018 Commonwealth Games.
The Duchess of Cornwall appeared disinterested at times during the ceremony and was caught on camera browsing through the program during Games chairman Peter Beattie's speech.
Charles will visit northern Queensland state, the neighboring Northern Territory and Vanuatu before returning to Britain next week.
But rather than going for a dip in the still-balmy autumn weather, they'll attend Kurrawa Surf Lifesaving Club for a plaque unveiling and a nippers display.
Both tried their hands at table tennis, with Camilla joking that she would "leave it to the professionals".
The Prince of Wales and the Duchess of Cornwall are now on a tour of Australia, where Charles officially opened the Commonwealth Games.
Two policemen were hospitalised after they were involved in a high speed crash while escorting Prince Charles and Camilla Parker to the Commonwealth Games opening ceremony at Gold Coast.