Tijuana Flats is at it again! They emailed their Flatheads another Buy One Get One Free Entree coupon for 7/28! They have been sending these emails out all summer. So, if you are a Tijuana Flats fan, make sure you sign up to be a Flathead and get these freebies and deals sent to your inbox. If you are a fan and have been slacking, I have the coupon here for you to print.