A former Sergeant, having served time with the Marine Corps, took a new job
as a school teacher.
Just before the school year started, he injured his back and 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 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!
There was dead silence - and he had no trouble with discipline that year...