The lady teacher asks the pupils what kind of medicines they know and what they are used for.
The first pupil said: Tylenol?
Very good! And what is it used for?
It is used for headache.
The second pupil said: Nytol
Excellent. And what it is used for?
To help you sleep
Now it is Johnny's turn and he said: Viagra
Johnny. What is it used for?

