What can I say. Stumbled across it.. showed it to some UK friends.. they said that this exemplifies the best and worst of the US in a horror sense. Then I explained that that's how Gary Busey is all the time.
He has mighty pearly teeth for a redneck. Puking hippies and chicken wing suppositories gets it five stars, the monkey talk at the end would earn it more.
Also, I have to believe that last exchange was improvised entirely on Mr. Busey's part. It's nearly clear the actor opposite Gary was attempting to catch up to his insanity train.