Arnold's desire to join a coveted elite club at school has serious consequences for the busboy at the local hamburger joint when the prank prompts the busboy's unsympathetic boss - without investigating the situation - to unmercifully fire him on the spot.
Kimberly makes a return visit home and all seems well with her, except that she's hiding a dark secret. The fact that she has been utilizing the dangerous Bulimic practice of staying thin by eating and then regurgitating it back out in the bathroom. She does her best to hide this from everyone until it becomes all too clear that her health is in jeopardy.
Arnold overhears Drummond's phone conversation where he authorizes the firing of a poorly performing employee. Knowing he is getting an F in geometry (and fearing similar treatment from his father), Arnold turns to a con artist to forge his report card and Drummond's signature. But things backfire when Drummond - elated when he thinks his son had done outstanding in the class - plans to have him enrolled in an advanced placement course.