This movie is a hate-letter to modern society. Baked beneath the fake kindness and excuses we give when blowing something or someone off when we want to indulge in our own selfish desires, we don't quite realize how built up these fantasy realities of our lives have become until we would be forced for a single day to say nothing but the absolute honest truth and nothing less. And that is what is on display here, as Carrey plays a lawyer who, thanks to his son's birthday wish, can not lie for a single day. It would be funnier if it was not also so simultaneously saddening.