That’s right! Tomorrow, for the celebration of 7-Eleven’s 81st birthday, 7-Eleven will be giving out free Slurpees from 7am to 11pm (while supplies last). They’re also being cute and giving the free Slurpees away in 7.11 oz birthday cups, which is where the supply factor comes in. Makes sense that they give them away on 7/11, huh?