WATCH: Prince William scolded by the Queen during celebrations
One eagle-eyed viewer shared the moment on Twitter
There's nothing quite as embarrassing as being told off by your grandma in public and poor Prince William had to face it in front of a huge crowd.
It happened when the royal family gathered on the balcony at Buckingham Palace to watch the RAF fly-past during the Queen's birthday celebrations.
One eagle-eyed journalist spotted the moment that the Duke of Cambridge got scolded and it's taking the world by storm.
In the clip the Queen seems to tell William to stand up, which he does rather sheepishly.
The Queen celebrated her actual birthday on April 21st and her official birthday June 11th.
The three day celebration last week saw several events take place in London, including a special thanksgiving service at St Paul's Cathedral, a street party on The Mall and the Trooping The Colour ceremony.
Prince Philip also celebrated his 95th birthday last week on June 10th.
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