I remember watching one of those daytime court shows. The plaintif had asked his friend (the defendant) to drive his car and he got pulled over for going through a red light or somesuch. The plaintiff was telling the judge: "Everyone knows that green means go, yellow means slow down, and red means stop." The judge just looks at him and says: "Wrong. Green means it's legal to enter the intersection, red means it's illegal to enter the intersection (except when making a right hand turn where allowed), and yellow means that the light is about to change to red."
I think that was the most satisfied I've ever been watching a daytime court show.