A Mechanic was removing a cylinder head from the motor of a motorcycle when he spotted a well known heart surgeon in his shop. The surgeon was waiting for the service manager to look at his bike.
The mechanic shouted across the garage, ""Hey Doc, can i ask u a question?""
The surgeon, a bit surprised, walked over to the mechanic who was working on the motorcycle. the mechanic straightened up, wiped his hands and said, so doc, look at this engine,I open its heart, take valves out, fix them, put "em back and when i finish, it works like new. so how come i get such a small salary and you get really big bucks, when you and i are doing basically the same work?""
The surgeon paused, smiled and leaned over and whispered to the mechanic, ""Try doing it with the engine running.""