To my friend's astonishment, a police car pulled up to her house and her elderly grandfather got out. The patrolman explained that the old gentleman had been lost in the city park and had asked for help.
"Why, Grandfather," my friend said, "you've been going there for 40 years. How could you get lost?"
The old man smiled slyly. "Wasn't exactly lost," he admitted. "I just got tired of walking."