A man calls for an ambulance for his wife. When the ambulance has arrived, the doctor wants to see the patient immediately. He comes out of the bedroom after a minute and asks the husband for a hammer. After another couple of minutes he wants a chisel. Then the pincers. And then a screwdriver.
“But doctor, what are you doing to my wife?” the worried husband demands to know.
“I’m doing nothing to your wife,” the doctor replies, “I’m having trouble opening my medical suitcase.”