It's obnoxious to try to assert dominance over family members.
Billy has been dismissed by his father a lot lately, and is getting upset at it.
Billy wants to do something about it.
Billy tells his father he's going to leave unless he gets some proper respect.
Billy tells his father he wants to fight him, tired of being disrespected.
The father, afraid of losing his son, works on being better.
Billy's father accepts, and Billy beats up his dad, feeling horrible after the fact.