According to a news report, a certain private school in Victoria,
BC recently was faced with a unique problem.

A number of grade 12 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.

So he was going to show them how hard it was to clean them, so the maintenance man got his mop put it in the toilet and the wiped down the mirror needless to say the girls never kissed it again!!