To get a free Birthday Burger you have to sign up for their rewards program. They will then dend you coupons via email weekly and occasionally, including your Birthday, send you a coupon for a free Burger.
I haven't heard of a free burger but I know they sing and give a free sunday
I think you have to sign up on line?Dennys has free birthday grand slam too
Show your driver's license
Thanks! Your answer is awaiting moderation.