One year in a strict school, all the teenagers started wearing lip-stick in school.
The school principal, thought this wasn't a problem, until they started leaving lip marks on the bathroom mirrors and walls.
After a couple of months, the principal thought it had gone too far.
So the she called a meeting in the girls bathroom with all the teenagers, and asked them to explain this awful behavior, the girls said nothing, so the principal asked the janitor to show the girls how hard it was to clean the lip prints off, so the janitor got out a sponge, dipped it into a toilet and started to rub off the lip marks.
Since then, there have been no more lip-stick-marks!
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