Thursday (July 11) is National 7-Eleven Day and you know what that means? Free Slurpees! The Slurpee first hit the scene back in 1966 when 7-Eleven modified the machine used to make the Icee. They branded their version of the drink as the Slurpee because of the sound the slushy makes as its sucked through a straw. So, grab your free Slurpee and mix it up with us this year! Check out five ways to spike your Slurpee below. Source: Spoon University 7 Ways to Spike Your Free Slurpee This 7-Eleven Day was originally published on 92q.com