Popular Girls & Buster's Growing Grudge

Popular Girls: Francine accidentally takes her sister's backpack to day camp at the community center and discovers a magazine called "Popular Girl". Reading it convinces Sue Ellen and Fern to change their personality to become more likable.
Buster's Growing Grudge: Buster has never been mad at anyone for long, but he holds a grudge against Binky for telling his joke. This culminates to an onstage rant during a school talent show and Arthur has to set things right.