The phrase "OMG" was first used in writing in a 1917 letter to Winston Churchill.
During International War I, Europe was at war, and world powers like Britain were organizing their armies. By 1917, one renowned British admiral of the Royal Navy had retired and wrote to Winston Churchill to express his thoughts on the day's headlines, some of which were so thrilling that he wrote, "O.M.G. (Oh! My! God!)." How could he have realized that the acronym he created would go on to become one of the world's most-used phrases?