A mechanic was removing a cylinder head from the engine of a Harley Davidson

motorcycle when he spotted a well-known heart surgeon in his shop..

The mechanic shouted across the garage, “Hey, Doc, can I ask you a question?”

The surgeon a bit surprised, walked over to the mechanic working on the motorcycle.

The mechanic straightened up, wiped his hands on a rag and asked,

“So Doc, look at this engine. I open its heart, take the valves out, fix ‘em, put ‘em back in,

and when I finish, it works just like new. So how come I get such a small salary

and you get the 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.”