National convenience store 7-11 is celebrating it’s 84th birthday today (July 11th, 7/11) and you can join in on the fun with a FREE 7.1 ounce Slurpee. I heard about this yesterday but had to try it out myself before posting and I can verify that the deal tastes is good! Swing by your local 7-11 with the kids but beware the one we stopped at didn’t have tops for the special 7.1 ounce cups.