Stupid people

Knew a guy that had done every job he ever had for 20 year. We added it up one time and he was 120 years old! I was running a bobcat one time and he said "let me drive that thing" I asked him if he knew how. His reply was that he had run one for 20 years over at grand coolee dam. I got out of the seat and he got in, then he looks at me and says " OK now what do I do?" Here's your sign! There every where!!!!!