A mechanic was removing the engine parts from a motorcycle,
when he spotted a famous heart surgeon in his shop,
He called the surgeon and said.
“Look at this engine,
I opened its heart,
took the valves out, repaired and put them back..
So why do I get such a small salary and you get such a huge sum?”
The doctor smiled at the mechanic and came close to his ear and said;
“Try the same when the engine is running!.”