"Nobody created it, but it was popularized in Counter-Strike 1.6. People just saw people quickly scoping in and shooting, and thought it was a good on-the-go sniping tactic."
Some loser from Apr. 5, 2012
ADS in a split second in a game (Circa-1999); You call it quickscoping; It become so popular it becomes as contagious as cancer if not more; I'm the best technique in COD. HOW I FEEL ABOUT YOU NORMIES