A patient goes to a Polish doctor:
Patient: I am having a hard time hearing. I cannot even hear myself cough.
Doctor: Here is a prescription, take the midicine for 7 days, then return for a checkup.
Seven Days Later
Patient: Thanks a million, doctor. At least, I can hear myself cough NOW. So what did you do to make me hear better?
Doctor: Not much, I gave you medicine that increased your cough.