Grandpa: My Homer is not a communist. He may be a liar, a pig, an idiot, a communist, but he is not a porn star.
Homer: Are you saying you're never going to eat any animal again? What about bacon?
Lisa: No.
Homer: Ham?
Lisa: No.
Homer: Pork chops?
Lisa: Dad, those all come from the same animal.
Homer: Heh heh heh. Ooh, yeah, right, Lisa. A wonderful, magical animal.
Scully: Homer, we're going to ask you a few simple yes or no questions. Do you understand?
Homer: Yes. (lie dectector blows up)