Science question

A 6th grade science teacher, Mrs Parks, asked her class, "Which

human body part increases to 10 times its size when stimulated?"

No one answered until little Molly stood up, angry, and said, “You should not be asking 6th graders a

question like that!

I'm going to tell my parents, and they will go and tell the principal, and you'll get fired!" 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 Molly's mouth fell open, and she said to those around her, "Boy, is she’s gonna

get in big trouble” The teacher said to the class, "Anybody?"

Finally, Jimmy stood up, looked around nervously, and said, "The body part that increases to 10 times

its size when stimulated is the pupil of the eye."

Mrs. Parks said, "Very good, Jimmy." Then turned to Molly and continued, “As for you, young lady, I

have three things to say:

First, you have a dirty mind.

Second, you didn't read your homework.

And third, one day you are going to be VERY, VERY disappointed."