A farmer and his son were working hard on his barn when a city boy stopped to ask for directions. After helping the lost driver, the farmer went back to jacking up the small barn while putting blocks of wood under each corner.

The city boy just had to ask, "What are you doing?"

"Well," said the farmer, "My prize mule keeps scraping his ears on the barn each time he goes through the door and I just can't have that."

"Why don't you just dig a little ditch that goes under the doorway?"

The farmer said, "Thanks, I'll think about it" and the driver pulled away.
As the car heads down the road, the farmer turned to his son,
"Dumb city slicker. The mule keeps scraping his ears, not his feet!"