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Nightmare Fuel: Beavis and Butt-Head Do America
In the same movie, this hallucination scene is a deranged display of Nightmare Fuel. This includes, but isn't limited to, Butt-Head's skin melting off, demonic versions of the duo eating and deep-frying little monsters, and an undead version of the two literally headbanging their skin off.
The video footage of the X-5 unit's test subjects. In order, we are shown: One subject vomiting repeatedly on the floor, the next writhing in pain, and the last subject already dead and having the covers pulled over his face by a person in a hazmat suit.