Little Johnny’s class at school is studying medications.

The instructor, Sister Catherine, questions the students about the kind of medications they are familiar with and their purposes.

“Tylenol?” the first student inquired. Really excellent!

And what use does it serve? It is prescribed for headaches.

The second student chimed in, “Nytol.”

Sister Catherine said, “Excellent!”

“And what is it used for?” To get you to sleep, the student retorted.

Now when it was Johnny’s time, he uttered: “V***gra.”

And how does it function, Johnny? questioned a shocked Sister Catherine.

It’s used to treat diarrhoea. Johnny, who told you this?

“Nobody, but my mother tells my father every evening,…”

Take a V*gra, and perhaps that st will get harder.

Sister Catherine bled to death.