Bonds Mature
What is the difference between men and government bonds?
Bonds mature.

Aunt Dora went to her doctor to see what could be done...
Aunt Dora 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."