"Screams From a Mall" is an episode of The Itchy & Scratchy Show. It was written by Bart and Lisa, but credited to Grampa instead (as was "Little Barbershop of Horrors"). Because of this, Grampa never actually saw the episode until it won an award, and reacted in horror and disgust to the premise (although he nonetheless gave Bart and Lisa his award as they "earned it.").