kahruh nehdtetz, tehvuh hohnehtzahv?

This saying is used to indicate that inexperienced (or ignorant) people do not appreciate the value of hard work. The irony of saying, “After throwing a rock, he says his arm hurts.” implies the person is lazy. By doing such a small effort, it seems improbable that his arm hurts. Therefore, the person lacks a good work ethic and does not understand the effort required to perform a task successfully.