- Sarah: [Sarah is looking through a medical textbook and comes across an illustration of a nude adult male, noticing his penis]
- [giggles]
- Sarah: You look funny!
- David: So do you.
- David: [He notices what Sarah is looking at] We shouldn't be looking at this.
- Sarah: Why not?
- David: It could be sin.
- Sarah: [Regarding the male penis] But they're beautiful! How can looking at something so beautiful be a sin?