The kindergarden class has a homework assignment to find out about something exciting and relate it to the class the next day. When the time came for the little kids to give their reports, the teacher was calling on them one at a time. She was reluctant to call upon Dirty Ernie, knowing that he sometimes could be a bit crude, but eventually his turn came. Dirty Ernie walked up to the front of the class, and with a piece of chalk, made a small white dot on the blackboard, then sat back down. Well, the teacher couldn't figure out what Dirty Ernie had in mind for his report on something exciting, so she asked him just what the dot was. "It's a period" reported Dirty Ernie! "Well I can see that" the teacher said, "but what is so exciting about a period?" "Damned if I know" replied Dirty Ernie, "but my 13 year old sister said she missed one, then Daddy had a heart attack, Mommy fainted and the man next door shot himself!"