Ep 4. Goodbye Normal Jeans

As Hank's birthday approaches, he starts to feel self-conscious about his age, so he decides to purchase a pair of "normal" jeans to prove that he's not old. However, he quickly discovers that he's no longer comfortable in the tight-fitting jeans that he used to wear in his youth. Meanwhile, Peggy becomes obsessed with homeschooling Bobby after discovering that he's falling behind in math at school. Peggy takes it upon herself to educate Bobby in math, but her methods leave him feeling frustrated and overwhelmed. When Bobby gets a chance to go on a field trip to the water treatment plant, he awakens a new interest in science and math that inspires him to try harder in school. Meanwhile, Hank learns an important lesson about aging and the importance of accepting oneself in this heartwarming episode of King of the Hill.