Observation 2: Physical Development. The Geller Cup was the annual "cup" that Ross and Monica competed for as children in a family football game. On Thanksgiving, Ross and Monica decide to compete for the cup again, however the game was even more competitive due to their physical development. The early adulthood period is marked by completed physical development and the time of sharpest senses. This leads to an all day game of football, that they continue during a thunderstorm.