An older lady, who lived on the third floor of a boardinghouse, broke her leg. As the doctor put a cast on it, he warned her not to climb any stairs. Several months later, the doctor took off the cast.

"Can I climb stairs now?" asked the little old lady.

"Yes you can," he replied.

"Thank goodness!" she said. "I'm so tired of shinnying up and down that drainpipe!"