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 2 episode, Old Money. Grampa falls in love with a woman from his retirement home. After he misses her birthday because of Homer, she passes away, and Grampa will not forgive his son.