It's inexcusable to keep someone confined to a house.
Barry is in his kitchen when his son Billy comes home and shows Barry his awful report card from this semester.
Barry wants to punish Billy for the bad grades.
Barry tells Billy that he's not going to get an allowance for a month to simulate how people with bad grades eventually fare in life.
Barry tells Billy he's not allowed to leave the house for any reason for the whole entire summer.
Billy learns that he should take his schooling more seriously as it might affect his finances his whole lifetime.
Billy is nervous and stressed to spend all the good weather days indoors and begins to cry.