So this retired guy sits around the house all day wife says, You could do something useful, like vacuum the house once a week. Guy gives it a moments thought and says, Sure why not show me to the vacuum. Half an hour later, the guy comes into the kitchen to get some coffee. Wife says, I did not hear the vacuum work, I thought you were using it? Exasperated man answers, The stupid thing is broken, wont start got to buy a new one. Really, she says, Show me - it worked fine the last time. So he did