The Duke of Sussex got stuck into the cake as he visited the Royal Flying Doctor Service and marked the organisation’s 90th anniversary.
Harry and mother-to-be Meghan were introduced to health workers and those who have been helped by the RFDS which provides healthcare across 7.69 million square kilometres of Australia.
But it was the large cake which appeared to catch the duke’s eye.
David Charlton, RFDS aviation general manager, said the service would consider the knife a prized possession.
The couple also met nurses and other staff and volunteers from the service during their visit to the hangar at Dubbo airport.
Mr Charlton said discussion turned to the number of babies which are born mid-air.
He said: “Our staff thought at was quite interesting, given the couple’s current condition.
“The couple found it most amusing, and interesting.
“We all wanted to ask if it was a boy or a girl, but everyone behaved themselves.”