HER Majesty's guards are as famous for their straight faces as they are for their iconic bearskin hats, but this was the straw that broke the camel's back.
Two grey-coated guards were standing at attention outside St James' Palace, in central London, when a tourist decided to record a short video.
The man asked a friend to hold a camera, then sauntered out and started singing and dancing in front of the gate.
The routine lasted exactly 10 seconds before the guard on the left had enough.
This tourist is about to get the fright of his life
"Halt! Get yerself away!" he shouted angrily with a thick Scottish accent, giving the tourist the fright of his life.
Unfortunately, his heavy brogue made it extremely difficult to understand what he shouted next, but the tourist took the hint.
"Turn the camera off!" the guard bellowed as he scampered away.
The clip, posted to YouTube in January, went viral over the weekend, gathering almost 190,000 views at the time of publication.
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