I know, I had to check twice, too. I assure you it's not a reference to primate anatomy. The players in the game are Monkeys in a ball, like a gerbil on a running wheel.
Anywho...my kids were getting crazy playing MonkeyBalls one afternoon and I decided to shoot some images of them from the perspective of the television. I was positioned just below the screen so that they could play and not really see me.
It was hilarious!