David Cameron was caught humming a little tune by TV microphones as he made his way back inside Number 10 after announcing when Theresa May would succeed him as prime minister.
After making a statement where he hailed May as "strong and competent", Cameron was picked up by an ITV microphone humming "Do-do-do-do" before saying: "Right!"
VIDEO: PM appears to sing a little sorrowful tune as he re-enters Number 10 after announcing May handover: pic.twitter.com/9nbszG3pl8
-- Vincent McAviney (@VinnyITV) July 11, 2016
And predictably, the internet went into meltdown.
But what was he singing? Social media was full of suggestions:
#Cameron should have been singing"Pack up all your cares and woe".
-- malcolm cowing (@atillatherover) July 11, 2016
Cameron was humming The Winker Song by Ivor Biggun.
-- Richard Blandford (@rblandford) July 11, 2016
Is it me or did #Cameron just manage to stop himself humming the theme for 'The Great Escape'?
-- calvin (@playedoutscenes) July 11, 2016
General consensus is that David Cameron was humming The Final Countdown, by Europe.
-- Rob Davies (@ByRobDavies) July 11, 2016
When Cameron walked back into Number 10 was he humming the theme tune to the West Wing?!?
-- Dr Sarah Quinnell (@sarahthesheepu) July 11, 2016
What does it mean? Speculation was at rife:
Cameron Caught On Microphone Singing A Little Song After He Announces Theresa May Will Be Prime Minister, was it there May be trouble ahead?
-- John Earle (@JEarleSkembear) July 11, 2016
Cameron humming off into the shadows of the political system. Sums it all up really
-- Ayo Ayedun (@realfendiking) July 11, 2016
And why was he singing? One guy had the answer:
It's not really a mystery that David Cameron would hum a little tune - singing to oneself is a common self-soothing response to high stress.
-- Patrick Strudwick (@PatrickStrud) July 11, 2016
And what now? The internet is demanding a dubstep remix:
Has anyone remixed Cameron's tuneless humming yet
-- James Leech (@jamesdleech) July 11, 2016
David Cameron cheerfully humming to himself is my new jam
-- [o=o] [o=o] [o=o] (@AdventuresDub) July 11, 2016
how long until the dubstep remix of Cameron's "doo doo doo" song?
-- David Sugarman (@ShugZ) July 11, 2016
Maybe there's a new career waiting for Cameron after he hands the keys to Number 10 to Theresa May.