"There are just a lot of universes that really like making snakes. But the one my sister killed was, as far as we could tell, something more akin to a boa constrictor or anaconda," Alex says, trying his best to sound reassuring. "And also would have had to have been a water-dwelling snake, or from somewhere with immensely less gravity than here to avoid crushing itself with its own weight." Pause. "You ever watch Dance or Die?"