When I was in college the Hardees on Riverside Dr. close to downtown Macon, GA had an all-you-can-eat sausage gravy biscuit deal for 99 cents on Sundays if I recall correctly. If you were real sweet to the ladies working the register they would tell the cook to fish out some extra sausage chunks for you.
That Hardees is now a Zaxby's. I think the grease is the same though.
