Lisa: Dad, why is the world such a cesspool of corruption?
Homer: [sotto voce] Oh, great... [speaking up] All right, what makes you say that?
Lisa: Well, in Sunday School, we learned that stealing is a sin.
Homer: Well, DUH.
Lisa: But everybody does it. I mean, we're stealing cable as we speak.
Homer: Oh. Look at this way, when you had breakfast this morning, did you pay for it?
Homer: And did you pay for those clothes you're wearing?
Lisa: No, I didn't.
Homer: Well, run for the hills, Ma Barker! Before I call the Feds!
Lisa: Dad, I think that's pretty spurious.
Homer: Well, thank you, honey.
Episode: 7F13, Homer vs. Lisa and the 8th Commandment (when Homer gets free cable TV)