Someone that was out way before myself, explained that the word 'rod' was a referance or misstranslation of the word staff. The kind a sheep herder would use. She went on to say that the herder would never use a staff to beat sheep, just a kind of nudging and guiding along the path. I dont know if this is true though. But at the time, I liked hearing her version of scripture.
My little brother was a wiggely bull calf. He would smile at everyone as he was took outside the K.H. Little guy just couldnt sit still. He smiled walking back to his seat too.