"But you can't focus on things that matter if all you've been is asleep for forty years. Funny how sleep rhymes with sheep. You know"

This quote by Charlie Sheen is a pointer to stay awake and aware of the world around us. He is suggesting that if we have been asleep for forty years, we have actually lost out on a great deal of important occasions and problems that matter. He is also making a play on words by stating that sleep rhymes with sheep, which is a metaphor for being complacent and following the herd. He is encouraging us to stay awake and be aware of the world around us, so that we can concentrate on the important things that matter. He is also suggesting that we should believe for ourselves and not simply follow the crowd. By staying awake and mindful, we can make sure that we are notified and can make decisions that remain in our benefit.