A teacher is given a pop quiz to a class. She asked the class: What is red, juicy, and you love to eat? Dirty Harry raises his hand but the teacher calls on Susy: An strawberry? "No", the teacher says, "but it shows you were thinking. The teacher continues: What's long, yellow and curves? Dirty Harry raises his hand but she calls on Bob: A boomerang? "No", the teacher say, "but it shows you were thinking. Angrily Dirty harry says, "I got a question for you teacher. What is long, hard, pink at the tip, and in my pants? The teacher says with shock, "Harry that's enough!" DirtyHarry then says, "My pencil, but it shows that you were thinking.