HUmour... Mechanic vs Doctor...

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

"So doctor, look at this. I also open hearts, take valves out, grind 'em, put in new parts, and when I finish this will work as a new one.

So how come you get the big money, when you and me is doing basically the same work? "

The doctor leaned over and whispered to the mechanic...........


He said: " Try to do it when the engine is running ".