The Nightmare Dimension, also known as the Nightmare Zone, is a pocket dimension of Hell full of horror and madness, where all you dread, even if impossible, becomes a reality. Even the plants can read your mind, and can also scream.
The Nightmare Dimension also features in the song Apple Picking in the Nightmare Zone, a segment of which goes as follows:
A segment from Apple Picking in the Nightmare Zone
Apple Picking in the Nightmare Zone
Where the apples know your name
and they scream when you pick 'em, yeahhh