During the summer holidays, a school teacher cracked several ribs in an accident, and had to wear a plaster cast around the upper part of his body.
It fit under his shirt, and was not noticeable at all.
On the first day of the school term, still with the cast under his shirt, he found himself assigned to teach the toughest students in school.
Walking confidently into the rowdy classroom, he opened the window as wide as possible, and then busied himself with desk work.
When a strong breeze made his tie flap, the teacher took the desk stapler and stapled the tie to his chest.
Discipline in the classroom was not a problem from that day forth!
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