Homer: Ahh, not a bear in sight. The Bear Patrol must be working like a charm.

Lisa: That’s specious reasoning, Dad.

Homer: Thank you, honey.

Lisa: By your logic I could claim that this rock keeps tigers away.

Homer: Oh, how does it work?

Lisa: It doesn’t work.

Homer: Uh-huh.

Lisa: It’s just a stupid rock.

Homer: Uh-huh.

Lisa: But I don’t see any tigers around here, do you?

[Homer thinks of this, then pulls out some money]

Homer: Lisa, I want to buy your rock.

[Lisa refuses at first, then takes the exchange]