After getting punched by a bully at school, Sheldon decides he needs to learn self-defense. Rejecting his mother Mary’s suggestion to “turn the other cheek” (for religious reasons) and his father’s practical advice, Sheldon becomes fascinated by the philosophy of Jiu-Jitsu. He tries to apply its principles—using an opponent’s energy against them—to a confrontation with the bully. The plan backfires humorously when the bully simply kicks him. Ultimately, Sheldon resolves the situation not with violence, but by using his intellect: he presents a logical argument to the bully about the long-term consequences of a criminal record.