A feisty 70 year-old woman had to call a furnace repairman.

After a quick inspection, the man put some oil into the motor and handed her a $70 bill for labor.

"Labor charges!  One hour?" she exclaimed. "It only took you five minutes!"

The repairman explained that his company had a minimum one-hour charge on every house call.

"Well, I want my remaining 55 minutes of labor," the lady responded, and she handed him a rake.

The repairman spent the next 55 minutes in her yard bagging leaves.