There is this kid name Charles and he was misbehaving today
How was school today
Charles was misbehaving again
This shows the exposition because Laurie went to kindergarten and came back home and told his Mom about this kid Charles and that he is doing bad at school.
Laurie gets back from school, tells his mom what Charles has done today.
Charles was making trouble at school by telling a girl to say bad words
Laurie comes home and tells his mom that Charles was behaving well at school
Laurie's mom founds out that Charles was Laurie all along and Charles never existed also that Laurie was the problem at school
Deception can be used as a means for good or bad The theme is Deception can be used as a means for good or bad because Laurie made a fake character (Charles) and used that character for school to tell his parents about him misbehaving in school but it Laurie all along.