A middle school was faced with a unique problem. A number of girls were
beginning to use lipstick and would put it on in the bathroom. That was
fine, but after they put on their lipstick they would press their lips to
the mirror leaving dozens of little lip prints.
Finally the principal decided that something had to be done. She called
all the girls to the bathroom and met them there with the maintenance man.
She explained that all these lip prints were causing a major problem for the
custodian who had to clean the mirrors every night.
To demonstrate how difficult it was to clean the mirrors, she asked the
maintenance guy to clean one of the mirrors. He took out a long-handled
squeegee, dipped it into the toilet and then cleaned the mirror.
Since then there have been no lip prints on the mirrors.
There are teachers and then there are Teachers.
(are you on some sort of teachers' joke loop?) 
