Today only, at participating Denny's restaurants, take 20% off your entire check via this printable coupon. That's tied with our October mention as the largest percent-off we've seen from Denny's. It's valid for dine-in only. Click here to find a location near you. Some exclusions may apply.
And, in any case, it is not a very good coupon. "Hey, wake up! Your deal expires in five minutes!"