Matt was removing some engine valves from a car on the lift when he spotted the famous heart surgeon Dr. Michael DeBakey, who was standing off to the side, waiting for the service manager.
Matt, somewhat of a loud mouth, shouted across the garage, "Hey DeBakey...Is dat you ? Come over here a minute."
The famous surgeon, a bit surprised, walked over to where Matt was working on a car. Matt in a loud voice, all could hear, said argumentatively, "So Mr. fancy doctor, look at this work. I also take valves out, grind 'em, put in new parts, and when I finish this baby will purr like a kitten. So how come you get the big bucks, when you and me are doing basically the same work?"
DeBakey said softly, to Matt, "Try doing your work with the engine running."