It's not expected that you'll be abusive toward your parent.
Cal's dad keeps bothering him about not being able to get a job.
Cal wants his dad to stop bothering him.
Cal decides to find a job and save up money to find his own place.
Cal decides to fight his dad and ends up putting him in a hospital.
Cal is no longer bothered by his dad, and he gets more freedom.
Cal's dad sues Cal, and Cal is kicked out of the house.