Except of class we then pull again and see that they're just watching inventory footage of the practice on Tv. In "Grampa vs. Sexual Inadequacy", we see a montage that includes very hot puppies rolling down a conveyor belt, a rocket using off, and many others. Subverted when it cuts absent to Bart and Lisa at the film theatre viewing a Stock Footage marathon, and wondering why their mom and dad have quickly sent them to the cinema.