Dentist: "How did you lose your three teeth?"
Patient: "My wife prepared the pancakes and they were very hard to eat."
Dentist: "Then you could have refused to eat them."
Patient: "I did refused to eat them. Hence, I lost my three teeth."
A heart surgeon came to a mechanic to repair his car. The mechanic had a look at the car's engine, opened a valve and fixed it.
The mechanic said, "I repaired the engine which is the heart of the car. You also operate on the hearts of humans, so our jobs are quite similar. So why it you earn more than me?"
The doctor replied, "Can you repair the car when the ignition is on? We can!"