The man in this story is definitely a man. Not a boy anymore. But he has a special relationship with his step-sister. The girl. The one who's coming over to drink coffee on a day when it's too hot to drink anything that doesn't contain ice. Not that it makes any difference to the man. He's got a countdown going. He's having her over to do one more thing before the world ends as he knows it. He wants to do one impolite thing. One bad thing that might send out the kinds of vibrations that make people's parents wish their kids were never born. Mind over matter. Step-brother with step-sister. Because it doesn't matter. None of it does from six stories up looking over the edge.