This is definitely not something you expect to see when you're giving Buckingham Palace a visit in London.

In case you're not familiar with the rules for the guards charged with guarding official royal residences, the general one is that they can't 'eat, sleep, smoke, stand easy, sit or lie down' during their 2 hour 'tour of duty' while at their posts, and may only respond to threats or obstruction with stamping and a few selected phrases.

Clearly this guard was not following instructions and is now apparently under investigation by the British Ministry of Defense. Ain't no one dancing on the Queen's time but the Queen.

Via YouTube