The Queen's 'right hand woman' has revealed the moment she played a 'cruel prank' on Her Majesty and was told 'you're fired'.
Angela Kelly, who has worked for the Queen for many years, tricked her boss during a Royal Tour of Australia in 2006.
READ MORE - You can de-ice your car with a button - but some drivers don't know it's there
She was left amused when the Queen jokingly responded that she would pay with her job, reports the Mirror.
Writing in her book The Other Side of the Coin, the dresser explained that the Queen was desperate to see a kookaburra while Down Under.
Unfortunately, the Queen had trouble spotting one, but Angela saw a cute cuddly toy version at a Sydney market and decided to buy it and give it to her - but not before a little fun first.
She writes: "I had something in mind I thought the Queen would enjoy."
When she got back to Governor's House, where they were all staying, she placed the toy in a little cage on the balcony outside her room.
She then told the Queen she had spotted a "funny-looking grey bird" through the window.
Angela added: "The Queen looked outside and shouted 'It's a kookaburra!' I went to open the cage doors and she said loudly 'No! Don't do that! It will fly away!' and was behind me in a flash."Turning to her Majesty while trying to keep a straight face, I solemnly told her it was dead."
The Queen looked "horrified" until Angela walked towards her with outstretched arms and said "April Fool".
She explained: "She had only two words for me: "You're sacked. I was laughing uncontrollably as her Majesty turned to His Royal Highness and said "Do you know what she has just done to me? Angela has had me!".
The Queen took the little toy back to Windsor Castle with her and it now lives on the back of the sofa in her private living room.
Last weekend, the Queen left Windsor, where she spent the Christmas period, and travelled to Sandringham to spend the next few weeks.
She is currently staying at the private Wood Farm, a cottage, where the late Prince Philip spent much of his final years.