Red has been into a diaper and told to stay in the nursery for the day. When she realizes that she now has a lot of time on her hands, the bratty diaper girl decides to do something bad. She creatively expresses her dislike of diapers and diaper punishment.
The brave girl even writes a few comments about Step-Daddy on the board. It can only be assumed that if Step-Daddy finds this when he checks on Red, it will not end well for her.