ALBUQUERQUE, N.M. (KRQE) – Monday July 11 is free Slurpee day at 7-Eleven locations. It is the 50th anniversary of the Slurpee and all day people have taken advantage of free Slurpee’s. This year 7-Eleven is offering up a new birthday cake flavored Slurpee. They estimate giving away about nin million free, small Slurpee Monday. You have until 7 p.m. to get yours.