This just isn't right.
We all know how these things start: usually with a challenge. "Hey, I bet so-and-so can't dunk over me!"
Once it hits that point and everyone is around, there is no turning back. It must be settled.
Unfortunately for the shot-blocker, someone has to come up on the losing end, and this time, it was his turn. And his friends let him know it, as it should be.
Like Ludacris most eloquently put it, "Move b---h, get out the way!"