Jeff's 'friend' Doug keeps getting him into trouble at school, and Jeff silently takes the blame for him because he knows Doug's mother constantly picks on him and wonders why he can't be more like Jeff, who behaves like an innocent cherub at their house. One day when Dr. Alex is at Doug's house, he witnesses Doug's mother berating Doug unfairly, so Donna invites Doug's mother over just before Mary and Jeff get home from school so she can be there to see Jeff's behavior at home. Doug's mother learns that Jeff is obnoxious to his sister, loud, and unruly at home (just like any other adolescent boy) and all ends well when Doug arrives and his mother sees that he too, is just like any other boy, but knows when to be polite in somebody else's house. (thetvdb.com)