One Little Dot

A class was given a homework assignment to find out something 

exciting and relate it to the class the next day.

When the time came to present what they'd found, the first little 

boy the teacher called on walked up to the front of the class. He 

picked up a piece of chalk, made a small white dot on the blackboard 

and sat back down.

Puzzled, the teacher asked him what it was.

"It's a 'period'," he replied.

"I can see that," said the teacher, "but what is so exciting about a 'period'?"

"Darned if I know," said the boy,

"but yesterday my sister was missing one,

Mom fainted,

Dad had a heart attack

and the boy next door joined the Navy."