Give a Friend a Boost (or yourself) with a shout-out and $1 off a Diet Coke.
The $1 14-20oz. coupon is valid until 8/9 and this usually is on sale for $1 making it free.
Limit 5 coupons per sender per day. While supplies last. Coupons valid in the U.S. only.
Free Diet Coke Coupon – Facebook – EXPIRED