Hunchback and doctor

HUNCHBACK'S WIFE: I'm getting worried about that back of yours. It looks really awful. Perhaps you should see a doctor. Eventually, after a lot of persuasion the Huchback goes to the doctor.

DOCTOR:I want you to get undressed. ( Hunchback removes jacket then stops)

HUNCHBACK:I don't like getting undressed.

DOCTOR:If you want me to examine your back you'll have to get undressed.
( Hunchback removes his shirt but leaves his vest on.)

HUNCHBACK:I don't like showing people my back. They always laugh at me.

DOCTOR:Do you want me to examine your back or not? ( Very reluctantly the hunchback removes his vest

DOCTOR:How long is it since you were at school?

HUNCHBACK:Over 30 years. Why?

DOCTOR:Did you ever wonder what happened to your backpack?