The 8th grade science teacher, Mrs. Parks, asked her class,
> "Which human body part increases to ten times its size when
> stimulated?"
> No one answered until little Mary stood up angrily and said,
> "You should not be asking eighth-graders a question like that!
> I'm going to tell my parents, and they will go and tell the principal,
> who will then fire you!" With a sneer on her face, she then sat back
> down.
> Mrs. Parks ignored her and asked the question again. "Which body part
> increases to 10 times its size when stimulated?"
> Little Mary's mouth fell open. She said to those around her,
> "Boy, is she going to get in big trouble!"
> The teacher continued to ignore her and addressed the class.
> "Anybody?"
> Finally, Billy stood up, looked around nervously, and replied,
> "The body part that increases 10 times its size when stimulated is the
> pupil of the eye."
> Mrs. Parks said, "Very good, Billy." She turned to Mary.
> "As for you, young lady, I have three things to say. One, you have a
> dirty mind. Two, you didn't read your homework. And three, one day you
> are going to be very, very disappointed."