Maybe you've heard the story about the High School teacher who injured his back and had to wear a plaster cast around the upper part of his body. It was form fitted, fit under his shirt and wasn't noticeable at all. The first day of school he still had the cast on. He looked at his class roster and realized he'd been assigned to the toughest students in school.

He walked into the classroom, which was already rowdy and noisy. All the students were talking and laughing and either acted like he wasn't there or looked at him with disdain, daring him to say something, anything. The teacher walked over and opened a window as wide as possible and then started working at his desk. Several times, a strong breeze made his tie flip up into his face. Finally, he reached over, picked up the stapler an…