How do you know she's a unicorn?
3 seconds sound clip from the The Last Unicorn movie soundboard.
You can hear this line at 01:02:41.124 in the Blu-ray version of the movie.
Quote context
[...]
- My lady!
- You know that perfectly well, so don't be stupid.
- Har-har. So that be a unicorn! She is very beautiful.
- How do you know she's a unicorn?
- It may be that she'll marry the good prince, who loves her.
- Oh. Oh, purr, purr. Do that. Yes. That be nice.
- No. No, that cannot be. She is the last.
[...]