The first little boy called upon, walked up to the front of the class and with a peice of chalk, made a small white dot on the blackboard, then sat back down.
Puzzled, the teacher asked him just what it was. "It's a period," said the little boy.
"Well, I can see that." She said, "But what is so exciting about a period?"
"Darned if I know," said the boy, "but this morning my 16 year old sister said she was missing one, Dad had a heart attack, Mom fainted, and the guy next door shot himself."
