[chuck90199]

An engineer who was unemployed for a long time decided to open a medical clinic. He put a sign outside: “A cure for your ailment guaranteed for only $500. If we fail, we'll pay you $1000.”

A local doctor figures an engineer knows nothing about medicine, so this will be a good opportunity to scam him out of $1000.

The doctor goes to the clinic.

Doctor: “I have lost my sense of taste.”

Engineer: “Nurse, please bring the medicine from box 22 and put three drops in the patient's mouth.”

Doctor: “Hey. This is gasoline!”

Engineer: “Congratulations! You're cured. You have your taste back. That will be $500.”

The doctor is annoyed and a few days later goes back to the clinic figuring he'll be able to get his money back.

Doctor: “I have lost my memory. I can not remember anything.”

Engineer: “Nurse, please bring the medicine from box 22 and put three drops in the patient's mouth.”

Doctor: “Wait... that's gasoline!”

Engineer: “Congratulations! You've got you memory back. That will be $500.”

The doctor pays up and stomps out of the clinic. He returns again several days later sure that now he'll be able to get his money back.

Doctor: “My eyesight has become weak. I can hardly see anything.”

Engineer: “Well, I don't have any medicine for that. Take this $1000 bill,” passing the doctor only $500.

Doctor: “Wait. This is only $500.”

Engineer: “Congratulations! Your vision is back. That will be $500.”

[villagetinker]

I liked it, thanks for posting.