Add a location to your Tweets 
 
 When you tweet with a location, Twitter stores that location. You can switch location on/off before each Tweet and always have the option to delete your location history. Learn more ||||| The online abbreviation "OMG" may conjure images of hyper-caffeinated teenagers caterwauling over instant messenger about who puked at the homecoming dance, but OMG has a much more distinguished pedigree. 
 
 Perhaps the first usage of "OMG" appeared in a 1917 correspondence from British Admiral John Arbuthnot Fisher to Winston Churchill, wherein Fisher excitedly relayed the phrase to his former Royal Navy colleague — "I hear that a new order of Knighthood is on the tapis — O.M.G. (Oh! My God!) — Shower it on the Admiralty!!" 
 
 Look at sourpussed Fisher above. It's almost impossible to imagine him speaking the aforementioned sentence in anything but the voice of Alicia Silverstone circa 1995. 
 
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 [Via Letters of Note and George Mason University]
– The next time you tap out the letters OMG, take a moment to give a nod to British Admiral John Arbuthnot Fisher. The now-ubiquitous abbreviation may have first appeared in his correspondence with Winston Churchill back in 1917, reports io9.com by way of Letters of Note. It located the letter in question, in which 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!!" (Click to read about a more recent milestone for the abbreviation.)