Slam Dunked - S1.E20

Sandra begins dating a basketball player who rubs Mary the wrong way from their first meeting. He comes across as rude and arrogant. Calvin idolizes him and mimics his attitude. Brenda doesn't like hanging around the ""new"" Calvin. When Calvin hears how the Rocketman talks to Sandra in an argument, and hears the Rocketman call him ""some dumb kid,"" he changes his opinion of Rocketman and realizes that he was acting like a jerk.