A former Sergeant , having served his time with the Marine Corps,
took a new job as a school teacher, but just before the school year
started he injured his back.
He was required to wear a plaster cast around the upper part of his
body. Fortunately, the cast fit under his shirt and wasn't noticeable.
On the first day of class, he found himself assigned to the toughest
students in the school.
The smart aleck punks, having already heard the new teacher was a
former Marine, were leery of him and decided to see how tough he
really was, before trying any pranks. Walking confidently into the
rowdy classroom, the new teacher opened the window wide and sat down
at his desk.
When a strong breeze made his tie flap, he picked up a stapler and
promptly stapled the tie to his chest.
Dead silence. He had no trouble with discipline that year.