What has thousands of ears but can't hear anything?

Why this works

This riddle plays with the word "ears," which has two meanings. In one sense, "ears" refers to the auditory organs that allow hearing, while in the context of corn, "ears" are the part of the plant that contains the kernels. The clever twist lies in the imagery of a cornfield, which can indeed have thousands of corn "ears," yet these plants cannot hear anything, making the answer both humorous and unexpected!