I remember in 4th grade we were goofing around, on this occasion tossing a little rubber ball around in the classroom behind the teacher's back. The ball bounced around between the desks, and rolled down the aisle right between me and my friend who was sitting at the desk to the right of me. Both of us grabbed for the ball at the same time. I had a sharpened pencil in my hand and accidentally stabbed my friend in the hand with it. The tip of the pencil broke off cleanly and remained deeply embedded in his palm. He had to go to the hospital and get a tetanus shot. I felt really sorry about that. Funny how we remember such minor details in life. I guess at the time it made quite an impression on me and stuck in my mind for nearly sixty years.