A salesman called in to see a farmer and noticed a pig with a wooden leg. He asked the farmer "Why has that pig got a wooden leg"? The farmer replied, "never mind about the pig".
Again the salesman asked why the pig has a wooden leg. Eventually the farmer said, that pig saved my sons life. How did he do that! said the salesman. Well the farmer told him how his son was drowning in the dam and the pig swam out and saved the lad.
Rather puzzled, the salesman said, OK but what's that got to do with the pig having a wooden leg. The farmer replied, "Well with such a smart pig you just could'nt eat him all at once could you"!
Colin.