I avoid middle schoolers at all costs, I will cross the street to avoid a middle schooler.

In the post, we see an exuberant, happy, unselfconscious kid who just wants to jump around, have fun, and play with anyone who'll join him. In many of the comments, we see the social forces that will do their damnedest to crush that out of him. Courage, small person. Keep being you, keep doing the Calvin and Hobbes…

Outside of the dart board or the building the dart board was in?

This is a Gawker Media site. "Says" becomes "yells" because clicks.

So, I count 4 sentences. Let me guess: you only read 3?