When I was a teenager I was expected to clean up after myself. Tell me what you would do if you were twirling a loaded gun and accidentally shot yourself in the hand. I'd be afraid of making a mess and would run to the sink or grab a towel to control the spurting. This kid, however, ran around the entire house decorating the floors, walls, and furniture in a trendy new blood spatter pattern.
I'm sure you've heard of disgruntled employees returning to work after being fired to terrorize the boss and fellow employees with a gun. When this guy was fired, he made a point to cuss out his co-workers on the way out. One of them apparently didn't like this too much and decided to pay the out of work man a visit later that night. He knocked on the styrofoam core door and waited for jobless joe to answer. When he opened the door, this guy raised a .45 and cranked off five rounds. After being hit once in the chest, the homeowner slammed the door and took two more rounds to the chest through the door.