funny joke!

[siamgirl]

A mechanic working at a prestigious motor-cycle agency was removing a cylinder-head from the motor of a Harley-Davidson when he spotted a well-known cardiologist in the shop.
The cardiologist was there waiting for the service manager to come take a look at his bike when the mechanic shouted across the garage,
'Hey Doc, want to take a look at this?'
The cardiologist, a bit surprised, walked over to where the mechanic was 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, repair any damage, and then put them back in, and when I?m finished, it works just like new. So how come I make ?35,000 a year and you make ?1,000,000 when you and I are doing basically the same work?'
The renowned cardiologist paused, smiled and leaned over, then whispered to the mechanic: "Try doing it with the engine running!"