Andy's parents stick his nerdy, little brother, Kevin, on him -- which poses quite the threat to Andy's slacker lifestyle. Meanwhile, Kevin is torn between his desire to rat on Andy and his desire to cease being a nerd.

Kevin is racked with guilt after he accidentally burns the local market while touching himself in its bathroom, and two of his mean classmates who were robbing the store at the time take the fall for it. Meanwhile, Jim inadvertently becomes a trendsetter when he returns from Japan wearing Day-Glo hot pants.

Kevin, Toby and George seek to cheat on their SATs. Meanwhile, Posey goes into business as a masseuse, but her poorly-worded ad doesn't land her the kind of customers she was hoping for.

Andy is first pressured to go to Kevin's parent/teacher conferences, then is pressured to join the PTA by Toby's mother. During the whole ordeal, Andy has the hots for Kevin's teacher.