A Chinese doctor moved to the U.S., but couldn’t land a job at a hospital. So, he decided to open his own little clinic and hung a sign outside that read:

“Get treatment for $20 — If not cured, get $100 back!”

One day, an American lawyer saw the sign and thought, “Easy money!” So he walked in.

Lawyer: “Doc, I’ve lost my sense of taste.”
Doctor: “Nurse, bring medicine from box No. 22. Put three drops in the patient’s mouth.”
Lawyer: “Ugh! That’s kerosene!”
Doctor: “Congrats, your taste is back! That’ll be $20.”

Annoyed but not giving up, the lawyer returned a few days later.

Lawyer: “I’ve lost my memory. I can’t remember a thing.”
Doctor: “Nurse, bring medicine from box No. 22 and put three drops in his mouth.”
Lawyer: “Hey — that’s kerosene! You gave me this last time!”
Doctor: “Congrats, your memory’s back! That’ll be $20.”

Now fuming, the lawyer came back one last time, determined to win the $100.

Lawyer: “Doc, my eyesight is so bad — I can’t see a thing!”
Doctor: “I’m sorry, I don’t have any medicine for that. Here’s your $100.”

The doctor handed him a $20 bill.

Lawyer (squinting): “Hey, wait! This is only $20, not $100!”
Doctor: “Congrats, your eyesight’s restored! That’ll be $20.”