The rest of that saying is: "If it doesn't move, pick it up. If you can't pick it up, paint it."
I laughed out loud at this cartoon at Terminal Lance, ****NSFW, Language**** which has become a daily read for me. I remember one time saluting a Corporal in the PX parking lot at Camp Lejeune because his chevrons were unsat. I felt like an ass until I realized how much of an ass he must be feeling right now as he just got saluted because he didn't bother to keep up with his uniform.