| A man calls a refrigerator repair service. "My refrigerator isn't working." "What kind is it?" "It's a small one." "Electric, gas or propane?" "Propane." "Ah! Then the problem is most likely vapor lock. You don't need a service call, just turn the refrigerator upside down for a few minutes to allow the lock to clear. Then put it back and all should be well." Second call, a few minutes later, "The least you could have done is to tell me to empty the fridge first!" |