This woman is rushed to the hospital in critical condition. Her husband waits patiently in the waiting room. After a few minutes, the doctor comes out and asks her assistant for a wrench, which understandably concerns the husband.
Then, after a couple more moments, the doctor re-enters the room this time asking for a screwdriver. The man grows worried and begins to pace in circles.
Then, a little later, the doctor bursts through the doors screaming for a hammer, at that, the husband, in a state of frenzied terror, runs up to the surgeon and asks, "Doctor, what the heck is wrong with my wife?"
"I don't know," replies the flustered doctor, "I can't get my damn bag open."