Slurpees, Buy One Get One FREE The links in the post below may be affiliate links. Read the full disclosure Here. April 11, 2017 by SMFM Leave a Comment Hurry to 7-Eleven and score Buy One Get One FREE Any Size Slurpees! Please note that your Free slurpee must be the same size or smaller. Hurry here to find a location near you! This deal ends 4/16.