Lipstick Problem

According to a news report, a certain private school in
       Washington recently was faced with a unique problem.
       A number of 12-year-old 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.
       Every night, the maintenance man would remove them and the
       next day, the girls would put them back.
       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 had been to clean the mirrors,
       she asked the maintenance man to show the girls how much
       effort was required. He took out a long-handled squeegee, dipped it
       in the toilet, and cleaned the mirror with it. Since then, there
       have been no lip prints on the mirror.
       There are teachers, and then there are educators...