Look at that pig, stuffing his face with donuts on my time. That’s right keep eating. Little do you know you’re drawing ever closer to the poisoned donut... There is a poisoned one, isn’t there, Smithers?— Burns
Framegrabs from the Season 3 episode, Treehouse of Horror II. Homer, Bart and Lisa eat too much candy, and have nightmares: Lisa's Nightmare: Homer buys a monkey's paw that gives the holder four wishes, but with bad side effects. Bart's Nightmare: Bart has evil powers, and everyone in Springfield must act happy or bad things will happen. Homer's Nightmare: Homer is the subject of Mr. Burns' Frankenstein-like experiment.