There wasn't a big crack up and down one side until a second ago, either. Those things are surprisingly easy to break if you get the right angle. (Or, you know, if you slam them into walls. Either works.)

It's a little too cold down this end of the alley. the dust falls abruptly.

The shape is a body. Was a body, before the bacteria got to it. It used to be that of a tall, thin man, and there's no immediately obvious cause of death, unless you count the fact that it's green and slimy. To add insult to injury, someone has stolen its shoes.