- [Lucy has mistaken Richard Burton for a plumber, who is having a look at the pipes in her office washroom]
- Lucy Carter: You're English, aren't you?
- Richard Burton: [angrily] Certainly not! I'm a Welshman.
- Lucy Carter: Oh, is there a difference?
- [Richard curses her in Welsh]
- Lucy Carter: What does that mean?
- Richard Burton: It means "bite your tongue" in Welsh. It loses a little in translation.