A mechanic was removing the engine parts from a motorcycle.
When he saw 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 u get such a huge one?”
The doctor smiled at the mechanic and came close to his ear and said
“Try the same when the engine is running” !!