The 8th grade science teacher, Mrs. Parks, asked her
class, "Which human body part increases to 7 times its
normal size when stimulated?"
No one answered until little Mary stood up, angry, and
said, "You should not be asking 8th 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 7 times its normal size when stimulated?" Little Mary's mouth fell open; then she said to those around her, Boy, is she gonna get in big trouble!"

The teacher continued to ignore her and said to the
class, Anybody?"
Finally, Kevin stood up, looked around nervously, and
said, "The body part that increases 7 times its size
when stimulated is the pupil of the eye."
Mrs. Parks said, "Very good, Kevin," then turned to
Mary and continued, "As for you, young lady, I have
three things to say:

(1) you have a dirty mind,
(2) you didn't read your homework ; and
(3) one day you are going to be VERY, VERY
disappointed."