AO ratings mean you have to be 18 to buy it. I don't care about it that much either, but it's still a rating does a little more that "just" notify the parents.
There's no earthly way of knowing which direction we are going. There's no knowing where we're rowing or which way the river's flowing. Is it raining? Is it snowing? Is a hurricane a-blowing? Not a speck of light is showing, so the danger must be growing. Are the fires of hell a-glowing? Is the grisly reaper mowing? Yes, the danger must be growing 'cause the rowers keep on rowing, and they're certainly not showing any signs that they are slowing. AAAGGHHH!!!