It's one of the most common phrases of the modern technological age coined by celebrities like Paris Hilton and used by teenage girls across Britain and America.
However, it seems O.M.G. is actually very 'last century'.
It has emerged that the British admiral John Arbuthnot Fisher first penned the acronym in a letter to Winston Churchill as far back as 1917.
“Leave the past to history especially as I propose to write that history myself.”
