The 10th grade teacher asks Jessica: "What part of the human body
increases to 10 times it's normal size when excited?"
Jessica responds: "That's disgusting! I don't have to answer that question!"
So the teacher asks Johnny, who responds: "That's easy...the
pupil of the eye." "That's correct, Johnny. Very good!"
And turning to Jessica, she says: "I've three things to say to you,
first, you didn't do your homework;
second, you have a dirtymind;
and third, you're in for a big disappointment!"