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 Johnny 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 his and asked the question again,

“Which body part increases to 10 times its size when stimulated?”

Little Johnny’s mouth fell open.

Then he said to those around him,

“Boy, is she going to get in big trouble!”

The teacher continued to ignore him 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 Little Johnny and continued.

“As for you, young lad, 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.”