The 6th 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 and said, "You should not be
> asking sixth-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!" 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. Then she said to those around her, "Boy, is she going to get
> in big trouble!" The teacher continued to ignore her and said to the
> class, "Anybody?"
>
> Finally, Billy stood up, looked around nervously, and said, "The body
> part that increases 10 times its size when stimulated is the pupil of
> the eye." Mrs Parks said, "Very good, Billy," then turned to Mary and
> continued, 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."