In participation with Taco Bell Canada’s #BacktoCool deal, Taco Bell is throwing in a free coupon to try the new Doritos Locos Tacos Supreme taco. This coupon is only valid with the purchase of a combo with a value of $5.99 or more, and can only be used once per paying customer. So treat a friend to lunch, and remember that this coupon expires December 31st, 2014 and you must present this printed coupon when paying at Taco Bell.