The patient complained to his doctor about his neighborhood over-run with dogs.

Patient: “They bark all day and all night – they’re so noisy that I can’t get a wink of sleep.”

Doctor: “There are special pills for that problem and I’ll give you a prescription that will take care of your problem. Come see me in two weeks.”

When he returned in two weeks the doctor asked, “How are you feeling now?”

Patient: “I feel worse than before.”

Doctor: “I just can’t understand it – those pills are guaranteed to work.”

Patient: “That may be, but I’m up all night chasing the dogs. When I finally catch one, it’s almost impossible to make him swallow the pill.”