'I hate this': King Charles caught on camera quietly fuming

The new King of England has long been known for his often grumpy demeanour – and his ascendency to the throne doesn't appear to have changed that.

King Charles III was taking part in a signing ceremony in Northern Ireland on Tuesday (local time), when he was caught on camera having a frustrated outburst over a leaky fountain pen.

In the video, the new sovereign was seen signing a visitor’s book in front of cameras at Hillsborough Castle - the Royal Family’s home in Northern Ireland - when he became frustrated after ink spilled out of the pen and onto his hands.

"Oh god I hate this!" the Monarch said, standing up and handing the pen to his wife Camilla, Queen Consort.

Two side-by-side images of King Charles III at a signing ceremony in Northern Ireland with the Queen Consort as part of his United Kingdom tour when he became agitated with a leaky fountain pen. Source: Twitter / CBS News
King Charles III was at a signing ceremony in Northern Ireland as part of his United Kingdom tour when he became agitated with a leaky fountain pen. Source: Twitter / CBS News

"Oh look, it’s going everywhere," Camilla said as her husband wiped his fingers.

"I can’t bear this bloody thing — every stinking time," King Charles said as he walked away.

The testy moment came after he was heard asking an aide for the date, only to realise he had written September 12 on an official document rather than September 13.

On social media some appreciated his colourful response, saying it was relatable.

"Love it!" one person responded on Twitter.

"He's not wrong," said another.

Others thought a minor occurrence like this shouldn't lead to such an over-the-top response from the new king.

"Yeah, he can handle a crisis," one person sarcastically remarked.

"That guy is so patient he should become the head of the state of some country," another joked.'

On Sunday while officially being proclaimed the UK’s reigning monarch, King Charles also had a pen crisis.

At St James' Palace, he irritably signalled for aides to move a pen holder and pens, which were getting in the way of him signing documents.

Why is King Charles in Northern Ireland?

The royals' visit to Northern Ireland is part of a tour of the United Kingdom in the days since Queen Elizabeth died.

The King had earlier been greeted by crowds nearby in Belfast, where he delivered his own pledge to the region.

He is expected to go to Wales later this week, and has already been to Scotland.

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