Monday, July 11, was Free Slurpee Day at 7-Eleven. All day, customers nationwide were able to get unlimited Slurpees in special seven-point-11-ounce cups. The promotion has been held every year since 2002 in honor of 7-Eleven's unofficial birthday. "USA Today" reports the company gave away four-and-a-half-million tiny cups of its signature icy drink on July 11, last year. Shown enjoying their free Slurpees at a 7-Eleven in Sweetwater are Halle Martinez and Hannah Silva.