Red Light, Green Light

Patrick and Peyton were playing a game. Patrick would say, "Red means....?" and Peyton would yell out, "Stop!" "Green means....?" "Go!" This went back and forth a few times. Then Patrick thought he'd mix things up a bit and try to stump Peyton. He said, "Yellow means....?" And to his surprise, Peyton answered in a very drawn out way, "Go reeaaaaallll ssssllllllloooooowwww....."