What does the term "Dead on the Corn" mean?

Question

I heard it recently and i cant' figure it out, its probably from the late 1800's early 1900's. Dead on the corn....the person who said it is very old, and has Alzheimer's, so she doesn't even remember saying it.

Answer 1

Dead on the Corn-Field means standing your ground.

Answer 2

I think it means that one has very little chance of succeeding!