boredom...
...strikes impressionable violent youth. Brought up on a diet of high school shootings, sex drugs and rock and roll, now these middle class teenagers want a piece of the action. Unable to attain a gun permit in time, they take to the GARDEN of all godforsaken areanas to fight to the "death" in a one on one fist fight, *ahem* choreographed and put to a fittingly screamy soundtrack.
The only thing that could have been improved is the addition of genuine blood sweat and tears.