The scary thing here is that this child just has no regard for the plant life around them since they have drawn a scene where they are standing on a flower. You do wonder just what the point is in all of this and how did they even start to come up with the idea of turning this into a drawing?
The disturbing thing here is of course that this child is shouting for his dad while they are having sex and not wrestling, so how close was he when all of this was going on? He certainly seemed to be inspired enough to then go and start drawing what was happening, but at least it showed a closed door.
The disturbing thing about this image is what is being said on there because there is no way that a child should really know about that word or how it should be used. Instead, it should have said something a lot nicer than it was because at least then it would have been a pleasant drawing instead of something you now cringe at.