You thought you were so cool using OMG, didn’t ya? Well, the abbreviation actually dates back to the 20th century. I know, right? We thought it was limited to teenagers and those of us trying to be cool!
But, the shorthand for Oh My God as far as we know, was first used in a letter to Winston Churchil during the First World War. British admiral John Arbuthnot Fisher used it in a letter to Churchhil in 1917, writing, ‘I hear that a new order of Knighthood is on the tapis — O.M.G (Oh! My! God!)— Shower it on the Admiralty!!’
100 years later the shorthand is still used, daily by some, and was added to the Oxford English Dictionary in 2011.