Insomnia
(Originally in English)
A man goes to see a doctor and says to him, "I cannot sleep
every night because my neighbor upstairs makes
so much loud noise. He lets me get no sleep at all."
The doctor says, "Oh, no problem! It's easy! I'll give
you something, and you'll have a good sleep."
The next day, the man goes to see the doctor again
and complains, "I have taken the pills but still cannot sleep."
The doctor says, "Oh, my God!
They were earplugs for your ears!"