Little Johnny walked up to the front of the class, and with a piece of chalk, wrote the word “PERIOD” on the blackboard, then sat back down.
Well the teacher couldn’t figure out what Johnny had in mind for his report on something exciting, so she asked him just what that was.
“It’s a period” reported Johnny.
“Well I can see that” she said. “But what is so exciting about a period.”
“Dammmmnnn if I know” said Johnny, “but this morning my sister said she missed one.
Then Daddy had a heart attack, Mummy fainted and Uncle Bob crap himself.”