Shoshy Ciment/Business Insider 7-Eleven is giving away free Slurpees on July 11 — 7/11 — from 11 a.m. to 7 p.m. In addition to getting a free small Slurpee in stores on Thursday, customers can redeem a free Slurpee on the chain’s app. Customers can get a third free Slurpee if they order 7-Eleven delivery […]