Her Brother's Keeper

S2, E25: Charles is frantic that he and Buddy are not prepared for their physics final. When Joyce and Stephanie come over for a date, Joyce mentions that her brother Duane is a genius in physics. They agree that Duane could tutor Charles and Buddy -- if they in turn get Duane out of his shell. They begin working with him and Charles tries to explain that there is more to college than just studying...that he needs to relax. Charles, Buddy, Stephanie and Joyce gather for a Saturday night and Charles is pleased that they are ready for the physics final -- then Duane walks in...