A mechanical engineer who was unemployed for 5 years decided to open a medical clinic.

A mechanical engineer who was unemployed for 5 years decided to open a medical clinic. He puts a sign outside the clinic: “A cure for your ailment guaranteed at $400; we’ll pay you $1,000 if we fail.”

Doctor Ed walks by the sign and thinks this is a good opportunity to earn $1,000 and goes to his clinic.

The doctor says ” Sir, I have lost my sense of taste.”

Engineer replies “Nurse, can you please bring the medicine from box 19 and put 3 drops in the patient’s mouth.”

The doctor immediately screams “WHAT THE?!? This is Gasoline!”

Engineer responds “Congratulations! You’ve got your taste back. That will be $400.”

The doctor gets very annoyed and goes back after a couple of days later to recover his money.

Doctor this time tells the engineer “I have lost my memory, I cannot remember anything.”

Engineer again says “Nurse, please bring the medicine from box 19 and put 3 drops in the patient’s mouth.”

The doctor “But that is Gasoline!”

Engineer smiles and says “Congratulations! You’ve got your memory back. That will be $400.”

The doctor leaves angrily and comes back after several days, more determined than ever to make his money back.

This time the doctor said “My eyesight has become weak.”

Engineer replied “Well, I don’t have any medicine for this. Take this $1,000,” passing the doctor a $500 bill.

Doctor: “But this is $500…”

Engineer said “Congratulations! You’ve got your vision back! That will be $400.”