walk the corn
v. phr.— «Neither Patrick’s duties nor training involved something called “walking the corn,” which involves walking atop the collection of corn in a silo.…As it turns out, someone had quit the previous day, and Patrick was ordered to walk the corn.» —“The Good Fight” by Bernie Delinski Times Daily (Florence, Alabama) Mar. 1, 2009. (source: Double-Tongued Dictionary)