[at the gas station]
Homer: I keep hearing this horrible irregular thumping noise.
Attendant: It's your heart. And I think it's on it's last thump.
Homer: Oh, I thought it was my transmission. [drives away happily]
Kid: Where's he going?
Attendant: You remember that old Plymouth we just couldn't fix?
Kid: We're going to sell him to Mr. Nikopopolous?!
Attendant: You're a dull boy, Billy.
-- Missing the point, "Homer's Triple Bypass"