David Cameron's humming is taking the internet by storm
Can you name that tune?
Seconds after David Cameron announced to the gathered media that he will be stepping down tomorrow (Wednesday) a microphone captured him humming a light-hearted tune as he returned to the door of 10 Downing Street.
This innocent hum has now become a great discussion online with many wondering what the tune was, suggestions range from Winnie the Pooh to the Channel 4 ident and Black Beauty to the US political drama, The West Wing.
Everyone really wants to know...
However David Cameron has yet to enlighten us so the internet has continued to speculate, even creating their own versions of what it could be.
One joker has turned it into an 'evil theme tune' which is actually pretty funny. (Click on the Facebook logo if the video doesn't play.)
However even just the original footage has become quite popular with a number of tweets saying how much they like it.
'Do-doooo! Do-doooo!'