David Cameron (literally) hums a song of relief after announcing resignation

Unaware his microphone is still on, the soon-to-be-former U.K. PM can be heard humming to himself

Media | David Cameron hums a tune

Caption: British PM heard singing after officially announcing his resignation at a news conference Monday

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If you were retiring from a high-stress job before the age of 50, you'd probably be pretty happy too.
Especially if that job was prime minister of the U.K., and, you were responsible for a referendum where Britons voted to leave the E.U., wreaking havoc on the country's economy with no clear end in sight.
But maybe David Cameron could have done a better job of hiding his relief after announcing he would be replaced by a successor by Wednesday.
An instantly viral video making the rounds on Twitter shows the soon-to-be former PM walking away from the podium and into 10 Downing St. after making the announcement Monday. Unaware that his microphone is still on, he sings a lyricless little ditty ("doo doo doo doo") before stepping inside and saying, "Right. Good."

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Twitter users had a great time mocking Cameron's not-so-private celebratory tune.

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Some speculated about what he was singing and what it meant.

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Cameron haters found the moment symbolic.

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A BBC journalist who posted the video on Twitter joked about its virality.

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To be fair, Cameron isn't the first singing world leader we've seen. Maybe with those pipes, he could join the Van Cats.

Media Video | CBC News : Harper sings Sweet Child O' Mine

Caption: Prime Minister Stephen Harper and his band the Van Cats entertain Conservatives at their Christmas party Tuesday night

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