"Bigger"
One day, when the teacher walked to the
black board, she noticed someone had
written the word "penis" in tiny letters. She
turned to the class, scanned the boys and
girls, looking for the guilty face. Finding
not a guilty face in the bunch, she quickly
erased the blackboard and began her class.
The next day the teacher went into the
classroom and noticed, in larger letters
this time the same word scrolled on the
blackboard. Again, she looked around the
classroom in vain for the culprit, but found none.
Every morning for a week this happened.
Each day the same word was scrolled
larger than the day before. Finally one day
the teacher walked into the classroom
expecting to be greeted by the same word
all the way across the board.
Instead, she found scrolled on the blackboard:
"The more you rub it, the bigger it gets."