One day when the teacher walked to the
black board, she noticed someone had
written the word 'penis' in tiny letters.
She turned around, scanned the class
looking for the guilty face. Finding
none, she quickly erased it, and began
her class. The next day she went into
the room, and she saw, in larger letters,
the word 'penis' again on the black
board. Again, she looked around in vain
for the culprit, but found none, so she
proceeded with the day's lesson. Every
morning, for about a week, she went into
the classroom and found the same
disgusting word written on the board,
each day's word, larger than the previous
day's word. Finally, one day, she walked
in, expecting to be greeted by the same
word on the board, but instead, found the
words: "The more you rub it, the bigger
it gets!"

robby