The Strange Little Man at the Gas Pump

So, when I approached the gas pumps this morning, they were all full, but I chose to pull up behind a man who was already well into the act of filling his Hyundai.  Or, so I thought.  As I sat there, watching him fill the gas tank, he stood there and stopped and started the gas pump. Over and over and over again. Until it became comical. But so it continued, and continued, and continued. Until, finally he was using his hip to bump the car.  I can only speculate that he thought that the more he bumped his car, the more the gasoline settled, and he could load more.  When I went up to the pump to fuel my vehicle, it was interesting:  he paid $25.01 for gasoline.