Season 1: Episode 14: The Zack Tapes
Mrs. Wentworth is teaching a class on subliminal advertising, and she uses a hidden message in a song to get her students to bring her flowers and candy. Zack thinks this is a brilliant idea and uses it to deceive Kelly. His plan is to trick Kelly into going to the Sweetheart Dance with him is ruined when the girls figure out his plan. Unfortunately for Zack, the girls want revenge, and it comes in the form of Slater.