I don't know if this is true or not, just found it funny....
According to a news report, a certain private charter school in
San Antonio was recently 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, an old retired Army Master
Sergeant, would remove them and the next day the girls would
put them back.
Finally the principal, who also was a former Army Chief Warrant
Officer, decided that something had to be done. He called all
the girls to the bathroom and met them there with the
maintenance man. He explained that all these lip prints were
causing a major problem for the old sergeant who had to clean
the mirrors every night. To demonstrate how difficult it had been
to clean the mirrors, he 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.