Chen goes to Doctor Suho and says, "Doctor, wherever I touch, it
hurts."
Doctor Suho asks, "What do you mean?"
Chen says, "When I touch my shoulder, it really hurts. If I touch
my knee - OUCH! When I touch my forehead, it really, really hurts."
Doctor Suho says, "I know what's wrong with you - you've broken your
finger!"