Riddle: It's night and three man are walking down a sidewalk. They are walking in a straight line parrallel to the road. They are wearing green, yellow, and red respectively. The man wearing yellow walks onto the road but the cars don't hit him. The man wearing red does the same and avoids being hit. The green man also walks out but is disregarded by the first car. Why is this so?
Answer: The three man are symbols of a stop light that is being carried across the road. The lights of the cars show the color of each "man" and stop on red, slow down on yellow, but cars are not required to stop on green.