An elderly woman went to her doctor to see what could be done about her constipation.

"It's terrible," she said, "I haven't moved my bowels in a week."

"I see. Have you done anything about it?" asked the doctor.

"Naturally," she replied, "I sit in the bathroom for a half-hour in the morning and again at night."

"No," the doctor said, "I mean do you take anything?"

"Naturally," she answered, "I take a book."