However, if you would like to detach your enormous head from your body and "stand" at the top of the stairs looking down and yelling out of your cavernous mouth that would be just fine. Here's sort of what might have happened in this movie.
One of these people is about to have his ridiculously misguided anger therapy used against him.
The building is filled with loonies. This one appears to be dead.
This one is named Sam. I'm going to ruin the rest of your life by telling you as the credits roll he's eating a popsicle and mumbling something about white folk.
Didn't I tell you not to look in the basement?
February 21, 2013 update: You did tell me not to go in the basement, but I thought my raquetball raquet was down there. Now I got this hatchet in my head.