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, Homer Alone. When stress caused by the family causes Marge to have a nervous breakdown, she takes a solo vacation at 'Rancho Relaxo'.