Beavis and Butt-Head/Nightmare Fuel


 * The Woodshop episode. For those who haven't seen it, it involves B&B using a woodcutting machine to cut everything in the classroom. After running out of objects, Beavis then cuts his OWN finger in half and starts bleeding profusely. Even worse, there's no first aid kit as they sawed THAT in half.
 * It was bad because right from the start you know something like that would happen. Beavis stares at the spinning blade, and whatever passes for a brain compels him to stick his finger in the saw...gaah!