Being part of the military is a huge part of life for male members of the royal family, and Prince William is no different.
The Duke of Cambridge, who is second in line to the throne, served his country in the Royal Airforce between 2009 and 2017 - starting as a Flight Lieutenant before going on to be a helicopter pilot, assisting in a number of search and rescue operations.
During that time, Wills formed close bonds with his colleagues - so much so that he was treated just like any other member of the team, rather than a royal.
And, as anyone who has ever been in the military will tell you, a huge part of that camaraderie is playing pranks on each other and just generally taking the mick.
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This means William's colleagues shared a lot of jokes on his behalf and would regularly play pranks on the future king.
According to Hello!, there was one thing in particular that Will's friends really loved to do to prank the prince - and it involved his wife.
The publication reports that his colleagues went out and purchased various items of the Kate and William memorabilia that were produced in the run-up to the couple's royal wedding in April 2011 and would strategically place them around the training unit for him to find.
One work pal explained: "We spent a few pounds on Kate and William memorabilia and strategically secreted it around the place, so he might find his own face on a cushion or see it on a cup when you give him a cup of tea."
As far as work pranks go, we can all agree it could've been a lot worse and with Prince William's sense of humour, we're sure he will have appreciated the joke.
During his time in the Airforce, the Duke was based in North Wales at RAF Valley in Anglesey, where he co-piloted as an RAF Sea King. His first rescue mission involved an emergency response call from the Liverpool Coastguard in October 2010.
William and three other crew members flew from RAF Valley to an offshore gas rig in Morecambe Bay to help a man who had suffered a suspected heart attack.
After his RAF service ended, the Duke accepted a full-time role as a pilot with the East Anglian Air Ambulance in 2014, based in Cambridge. He remained with the EAAA until July 2017, when he left to carry out more active royal duties on behalf of The Queen.
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