"The Day the World Got Really Screwed Up!" is the Halloween special of the animated TV series The Angry Beavers.
Out trick-or-treating, the Beavers (Norbert and Daggett) go up to that scary house on the hill. In an unbelievable stroke of luck, it turns out to be the home of their B-movie star hero, Oxnard Montalvo. Their happiness is short-lived, however, when they discover the place is being taken over by a glowing space object that thrusts them into a wild "movie" that combines bits of every bad black and white sci-fi film that Oxnard ever made. In true B-movie fashion, it is up to the Beavers to defeat the monsters and return everything back to normal.