"Well, doc, 25 years ago ..."
"Never mind the past. Tell me how you broke your leg this morning." "Like I was saying... 25 years ago, when I first started working on the farm, I was a strapping young fellow, that night, right after I'd gone to bed, the farmer's beautiful daughter came into my room. She asked me if there was anything I wanted.
I said, "No, everything is fine."
"Are you sure?" she asked.
"I'm sure," I said.
"Isn't there anything I can do for you?" she wanted to know. "I reckon not," I replied.
"Excuse me," said the doctor, "What does this story have to do with your leg?"
"Well, this morning," the farmhand explained, "when it dawned on me what she meant, I fell off the roof!"