Smart phone-wielding teenagers were not the first to use “OMG” as an abbreviation for “Oh my God.” The abbreviation dates back to 1917 when British admiral Lord Fisher first penned the expression in a letter to Winston Churchill.
In a letter dated September 9, 1917, Lord Fisher wrote, “I hear that a new order of Knighthood is on the tapis — O.M.G. (Oh! My God!) — shower it on the admiralty!!” The letter went unnoticed for nearly a century until it was unearthed by lexicographers at the Oxford English Dictionary, when they added an entry for “OMG” in 2011.
The phrase didn’t catch on until the mid-1990s, when it became associated with online chat rooms, text-messaging and social media.
oh my God
oh my God — used (as in email or text messages) to indicate that something is considered surprising, shocking, thrilling, etc.